My final is in 3 days. Hope to get in at least 1 video a day. Thank you for making these. Update: yooooo, i got a 97, thank you so much for these videos!
Dude this gives me so much hope! Severely struggled with PrairieLearn online exams (auto graded exams) and am excited to show what I’ve got on a written exam! Thanks again for all of this!!! And wowza, congrats on the 97 🍾
Finally. An organized final course review, that goes in-depth per each question. There is nothing like this on RUclips. Its either too much theory, and no practice. or extreme problem solving with no explanation. This is incredible content, and the editing makes it less boring. PLEASE, keep up the good work, and dont disappear on us. Also, if you're comfortable sharing, what did you major in?
Timestamps which I forgot to include: Problem 01 -- 00:02:10 -- Finding the Equation of a Plane Problem 02 -- 00:11:05 -- Graphing a Quadric Surface Problem 03 -- 00:18:36 -- Graphing and Finding the Domain of a Vector Function Problem 04 -- 00:22:18 -- Finding Unit Tangent and Normal Vectors + Curvature & Arc Length Problem 05 -- 00:34:00 -- Finding All Second Partial Derivatives Problem 06 -- 00:42:17 -- Finding the Differential of a Three Variable Function Problem 07 -- 00:46:11 -- Deriving the Second Derivative w/ Chain Rule Problem 08 -- 00:53:51 -- Finding the Gradient Problem 09 -- 01:01:45 -- Finding Local Extrema and Saddle Points Problem 10 -- 01:15:00 -- Lagrange Multipliers with 2 constraints Donations really help me get by. If you'd like to donate, I have links below!!! Venmo: @Ludus12 PayPal: paypal.me/ludus12 Patreon: patreon.com/ludus1
Pro Tip: After you watch the video, do all the problems again on a separate sheet of paper/tablet page by yourself and you will find out exactly what you don't know .
(31:49) If you're struggling to understand the results the curvature part of question 4, remember that the function traces a helix (straight line in xy and xz, circle in the yz of radius 3). A circle has constant curvature, and the function does not curve along the x-axis, thus the curvature of the whole vector is a constant. Hope this helps someone.
I commented about 5 months ago on your calc 2 review saying I needed a 35 to pass, here I am again! Need a 40 to pass, really want to get a 75+ but its not looking probable. Your video is helping me a lot, be back in 2 days to report on my grade
for some reason, we never touched on lagrange multipliers. In my university class, "calc III for engineering" we have half a semester to complete the course, essentially we only take 2 classes for half the semester, and than 2 more the other half. I personally like this style of learning because you feel like you're able to focus more intently on 2 subjects. but yeah I don't remember going over lagrange multipliers it seems interesting. I already took the final but I'm just going back through the concepts for fun
Nice video! I took Multivariate Calc a couple years ago, so this was nice to brush up a bit. One note regarding mixed partial derivatives: Clairaut's Theorem only applies when the mixed partial derivatives are continuous. So if you find f_xy and it's continuous, then you can use Clairaut's Theorem to say that f_yx = f_xy. But if you find f_xy and it isn't continuous, then Clairaut's Theorem can't tell you anything about f_yx. Overall, great video, though. Thanks for taking the time to put this together!
Calc 3 final exam in 5 days, 4 days left to study, I just got 1 hour 7 minutes through this video but time for bed, I will do parts 2 and 3 tomorrow and then hopefully I will be able to practice enough problems the rest of the week to do well on the final. Thank you for this video it is great!
I don't know if its because I already learned this but you make Calc 3 so easy to understand. Can't wait to watch the rest! Thank you! I will likely watch your differential equations videos.
I watched this review to study for my calc 3 final the day before, and hardly anything from it was on my exam. But that's ok, it was a really good video. It was very useful, thank you.
@@LudusYT Funnily enough I watched part 1 and then started part 2, then realized there was a part 3 as well, but I was running out of time so I had to watch part 2 and 3 on 2x speed. I mean I suppose what you covered was on there, but a couple topics from my final weren't in your videos. Also, every question on the final was very difficult and not as straight forward as the examples from your videos. Your videos did help me with atleast one question, so for that I say it was worth it. But the rest were very complex questions that expanded on the basic principles you went over in your videos. I think what got me in the end was not being able to recognize what kind of problem the question was and what method I should be using. Still, thank you for the video
My final is in 14 hours and I have to get an 80% on it, so needless to say, these videos are very helpful. We can bring a cheat sheet and a calculator to the final, so you best believe I'm writing everything as small as possible to cram it all onto the cheat sheet, and setting up some macros on my calculator to make life easier
@frozenrat I *barely* made it. You have no clue how high the stakes were. If i got a D in that class, I would have lost my scholarship. I might have had to drop out, and my whole life would have changed at the very least. I only got a C because the final got curved up. It scared the shit out of me and I realized I can never let it get that close again, so I've been studying a lot this semester and actually going to class/doing all my homework, and so far my lowest grade is a 94%. That experience changed me lmao.
@Hamza Rehman Dude it scared me fucking straight tho, i got a 3.83 GPA this semester, and i'm taking summer classes and going for all A's. My cumulative is above 3.0 for the first time, and will be above 3.1 after summer
That’s awesome!!! Calc 3 is easier in most peoples opinion I’ve heard. I thought it was a bit harder since I had trouble graphing things in 3D at first and understanding vector Calc.
@@LudusYT I'll let you know how it goes I heard that calc 3 a harder class and calc 2 is harder concepts if that makes any sense but idk. only one way to find out.
You are saving my freaking butt, dude. I have my final in 23 hours now and I know absolutely nothing. I'm hoping your 3 part videos can at least get me a C. I'll update you but I'm sure if I fail, it won't be your fault lol this semester was so hard!
Got my final in about 40 hours from now. near the second half I got completely lost in the course and relied a lot on help to get through the assignments...lets see how much I can understand until then, just need 40% to pass but aiming for higher. Will update when I get the mark back.
Got absolutely cooked. I didn't watch the last video because I fell asleep, but the first 2 videos were perfect for the 3/10 questions that were there on my test. The last lecture was 70% of my test and I didn't study it so expectably, I basically failed. If I were you, I'd watch all 3 videos.
Antonio Mele - Gotcha. Eventually I’ll make a video that goes more in depth on that topic bc that’s something I wasn’t too sure about as well. I guess to check for absolute you just plug back in to the original equation.
No problem!!! Also, thanks for helping w/ the pronunciation, my Calc teacher must’ve been pronouncing it incorrectly. Which syllable gets stressed? Is it CLAY-row or clay-ROW. I’m pretty sure I said cluh-ROW which is neither of those LOL.
@@LudusYT Lol, I think you actually said it correctly. The pronunciation is very abrupt on both "Clay" and "Row" on this name. No stresses on any syllable. :)
Sorry man. I never learned abt flux when I was in calc 3. I assume that has to do with vector calc (divergence & curl). If you need that, check out the part 3 video.
Calc Final: 6 days Confidence: 6 Brain Cells: maybe 2 Windows: 5 Fingers: 10...*confused mumbles*...yeah, 10 for sure tears: yes Grades: Don't ask GPA: Who can say This video: 5 stars Time wasted writing this: Not too sure Level of enjoyment currently: Immense
My final is in 3 days. Hope to get in at least 1 video a day. Thank you for making these.
Update: yooooo, i got a 97, thank you so much for these videos!
This gives me hope!!
@@jasminejanneth6857 good luck!
Dude this gives me so much hope! Severely struggled with PrairieLearn online exams (auto graded exams) and am excited to show what I’ve got on a written exam! Thanks again for all of this!!!
And wowza, congrats on the 97 🍾
@@RinaNewhouse How'd it go (prob a REALLY long time since then lol, maybe even graduated already).
Finally. An organized final course review, that goes in-depth per each question. There is nothing like this on RUclips. Its either too much theory, and no practice. or extreme problem solving with no explanation. This is incredible content, and the editing makes it less boring. PLEASE, keep up the good work, and dont disappear on us. Also, if you're comfortable sharing, what did you major in?
totally agree man
I believe he said he was a physics major while he was talking about differentials
He said it's physics, watch the video carefully dude
Timestamps which I forgot to include:
Problem 01 -- 00:02:10 -- Finding the Equation of a Plane
Problem 02 -- 00:11:05 -- Graphing a Quadric Surface
Problem 03 -- 00:18:36 -- Graphing and Finding the Domain of a Vector Function
Problem 04 -- 00:22:18 -- Finding Unit Tangent and Normal Vectors + Curvature & Arc Length
Problem 05 -- 00:34:00 -- Finding All Second Partial Derivatives
Problem 06 -- 00:42:17 -- Finding the Differential of a Three Variable Function
Problem 07 -- 00:46:11 -- Deriving the Second Derivative w/ Chain Rule
Problem 08 -- 00:53:51 -- Finding the Gradient
Problem 09 -- 01:01:45 -- Finding Local Extrema and Saddle Points
Problem 10 -- 01:15:00 -- Lagrange Multipliers with 2 constraints
Donations really help me get by. If you'd like to donate, I have links below!!!
Venmo: @Ludus12
PayPal: paypal.me/ludus12
Patreon: patreon.com/ludus1
Pro Tip: After you watch the video, do all the problems again on a separate sheet of paper/tablet page by yourself and you will find out exactly what you don't know .
Also great video! UCSD makes math majors take a stupid exam on vector calc even though I took it years ago.
Def gonna try this. Thanks!!
I'm reviewing this the night before. I gotta lock in better in the future.
Same dude
haha more like im watching this in 2x because my final is in 2 hours
Lol hurry!
Ludus update i got my grade back i got a B and the average was a D THANK YOU FOR MAKING THESE VIDEOS
omg me too!!
Legend 😂. I got a week
that’s bar for bar what i’m doing 💀💀
(31:49) If you're struggling to understand the results the curvature part of question 4, remember that the function traces a helix (straight line in xy and xz, circle in the yz of radius 3). A circle has constant curvature, and the function does not curve along the x-axis, thus the curvature of the whole vector is a constant. Hope this helps someone.
good luck to all you guys
Fantastic video! My professor didn't post an organized review and just said "read over the whole book". Very helpful!
I commented about 5 months ago on your calc 2 review saying I needed a 35 to pass, here I am again! Need a 40 to pass, really want to get a 75+ but its not looking probable. Your video is helping me a lot, be back in 2 days to report on my grade
Well?
@@bottim9728 lmao this always happens. I forget to come back. But i got 70 which was good 😊
@@PedroTechnologies good stuff man I'm taking my mid term tommorow hope I get a 75 as well
@@bottim9728 good luck! Tbh we always think we will do worse then we do, it will all be alright at the end of the day
for some reason, we never touched on lagrange multipliers. In my university class, "calc III for engineering" we have half a semester to complete the course, essentially we only take 2 classes for half the semester, and than 2 more the other half. I personally like this style of learning because you feel like you're able to focus more intently on 2 subjects. but yeah I don't remember going over lagrange multipliers it seems interesting. I already took the final but I'm just going back through the concepts for fun
dude is out here casually saving college students' lives
Wonderful review, thank you!
I love you man. Thanks for making the review so simple and useful. You're the GOAT!
I have a final next week and your videos are very helpful reviews of the topics. You taught better than my prof. Thank you so much
42:19 excellent ad placement, you got em **there**
This video is helping me with my final in university. I appreciate your insights and help sincerely!
They are really good videos. I’m hopping to pass my class.
currently 10:04pm, final tomorrow morning at 9:30 lmao
I relate so much it hurts
my final is in exactly 24 hours. i am going to die
update: i passed with a C. thank god it’s over
@@emili2188 Who asked?
@@daybyday3840 i ain’t gotta be asked to speak... but your mom lol
thank you so much!! i had a rough semester especially when it came to calc 3 and this video saved me!!!!
Nice video! I took Multivariate Calc a couple years ago, so this was nice to brush up a bit. One note regarding mixed partial derivatives: Clairaut's Theorem only applies when the mixed partial derivatives are continuous. So if you find f_xy and it's continuous, then you can use Clairaut's Theorem to say that f_yx = f_xy. But if you find f_xy and it isn't continuous, then Clairaut's Theorem can't tell you anything about f_yx. Overall, great video, though. Thanks for taking the time to put this together!
these videos deserve more clout
Lol thank you. I hope they get more clout in the future, but who knows. I’m happy with the current growth that we’re getting from Tik Tok lol.
Super video! I applauded for $2.00 👏
Calc 3 final exam in 5 days, 4 days left to study, I just got 1 hour 7 minutes through this video but time for bed, I will do parts 2 and 3 tomorrow and then hopefully I will be able to practice enough problems the rest of the week to do well on the final. Thank you for this video it is great!
Not me watching all 3 parts the night before my exam
@@sammilbank8456 how'd you do
@@kiddcamel well enough to go from a B- to B+
I don't know if its because I already learned this but you make Calc 3 so easy to understand. Can't wait to watch the rest! Thank you! I will likely watch your differential equations videos.
Your videos were amazing. I was so worried about my final exam for calc 3, and your review sessions definitely helped out a ton.
You taught me more in 30 minutes than my teacher did in the entire semester
Don't sleep through class next time.
Mate this is just what i needed to prep for the final. Thanks a bunch
I watched this review to study for my calc 3 final the day before, and hardly anything from it was on my exam. But that's ok, it was a really good video. It was very useful, thank you.
That’s weird. This 3-part series basically covered everything I covered (when I was in college) during Calc 3. Did you only watch the part 1?
@@LudusYT Funnily enough I watched part 1 and then started part 2, then realized there was a part 3 as well, but I was running out of time so I had to watch part 2 and 3 on 2x speed. I mean I suppose what you covered was on there, but a couple topics from my final weren't in your videos. Also, every question on the final was very difficult and not as straight forward as the examples from your videos. Your videos did help me with atleast one question, so for that I say it was worth it. But the rest were very complex questions that expanded on the basic principles you went over in your videos. I think what got me in the end was not being able to recognize what kind of problem the question was and what method I should be using. Still, thank you for the video
My final is in 14 hours and I have to get an 80% on it, so needless to say, these videos are very helpful.
We can bring a cheat sheet and a calculator to the final, so you best believe I'm writing everything as small as possible to cram it all onto the cheat sheet, and setting up some macros on my calculator to make life easier
How did you do?
@frozenrat I *barely* made it. You have no clue how high the stakes were. If i got a D in that class, I would have lost my scholarship. I might have had to drop out, and my whole life would have changed at the very least. I only got a C because the final got curved up.
It scared the shit out of me and I realized I can never let it get that close again, so I've been studying a lot this semester and actually going to class/doing all my homework, and so far my lowest grade is a 94%. That experience changed me lmao.
@@youreyesarebleeding1368 damn bro
@@youreyesarebleeding1368 DAMN man
@Hamza Rehman Dude it scared me fucking straight tho, i got a 3.83 GPA this semester, and i'm taking summer classes and going for all A's.
My cumulative is above 3.0 for the first time, and will be above 3.1 after summer
Thanks a lot! I am trying to learn calculus 3 at home so this extremely helpful
Thanks l had a calculus test in 4 years nice review
Just got a 95% on my calc 2 final thanks to your videosl.. Now to start preparing for calc 3.... lol
That’s awesome!!! Calc 3 is easier in most peoples opinion I’ve heard. I thought it was a bit harder since I had trouble graphing things in 3D at first and understanding vector Calc.
@@LudusYT I'll let you know how it goes I heard that calc 3 a harder class and calc 2 is harder concepts if that makes any sense but idk. only one way to find out.
SO HELPFUL! Thank you for taking the time to make this series 🙏
Thanks to your videos PASSED Calc 3
OMG!!!!! IM SO GLAD I COULD HELP YOU OUT!!!!!!
Its interesting that everyone has a different way to do lagrange multipliers problems.
You are saving my freaking butt, dude. I have my final in 23 hours now and I know absolutely nothing. I'm hoping your 3 part videos can at least get me a C. I'll update you but I'm sure if I fail, it won't be your fault lol this semester was so hard!
Update?
Update?
@@duppydan6202 hey wow! I did pass with a C haha. Thank God 🙏
@@totinospizzarolls4737 I passed with a C!!
@@emili2188 Let’s go!! I got mine in a couple days, wish me luck 🙏
I really appreciate the time you took to make this video.
Elements of style ! Great book
This is the best series. no pun intended
going to use these videos to try and learn calc3 material in two weeks, as I will update if this works or not. proficiency exam is in two weeks!
Absolute legend mate I wish you the best :)
1:15:55 Basically what “learning” has now become.
Got my final in about 40 hours from now. near the second half I got completely lost in the course and relied a lot on help to get through the assignments...lets see how much I can understand until then, just need 40% to pass but aiming for higher. Will update when I get the mark back.
How’d you do??
Final in roughly 4 hours. Haven't studied at all. Gonna watch all videos and see how it goes.
What’s the update?
did you make it?
Got absolutely cooked. I didn't watch the last video because I fell asleep, but the first 2 videos were perfect for the 3/10 questions that were there on my test. The last lecture was 70% of my test and I didn't study it so expectably, I basically failed. If I were you, I'd watch all 3 videos.
@@terrible2d you'll come back harder. quick q, are you a commmodore lol
great video!! saving my grade rn
wish me luck on my midterm on saturday, thanks for everything :)
Good luck!! I’m sure you’ll do great!!
how did you do?
@@rubenramirez8062 I dont know yet, but I expect 65/100 :)
@@iyrg what happened? Good or bad?
@@ifeanyiogbennaya6969 bro I will graduate soon :)
my exam is in about 12.5 hours boys, wish me luck
Bro imma cook this final like 100%
Thank you! Just in time for my quiz tomorrow
Antonio Mele - Awesome! What’s the topic?
@@LudusYT 14.7 Max and Min values. I understand how to find local extrema well, but finding absolute extrema is kind of tricky.
Antonio Mele - Gotcha. Eventually I’ll make a video that goes more in depth on that topic bc that’s something I wasn’t too sure about as well. I guess to check for absolute you just plug back in to the original equation.
Great video, hopefully these vids save me!!
final run guys... good luck soldiers
THANK YOU! You are amazing!
At time 46:20, why do we add the derivative of r and theta? The function shows a comma, z=f(r,theta) and not and addition z=f(r + theta)?
Ur gonna get a that 100k plaque soon Ludus!!💪💪
Thanks a lot for the tutoring! P.S. Clairaut = Clay + Row
No problem!!! Also, thanks for helping w/ the pronunciation, my Calc teacher must’ve been pronouncing it incorrectly.
Which syllable gets stressed? Is it CLAY-row or clay-ROW. I’m pretty sure I said cluh-ROW which is neither of those LOL.
@@LudusYT Lol, I think you actually said it correctly. The pronunciation is very abrupt on both "Clay" and "Row" on this name. No stresses on any syllable. :)
Ahh gotcha lol. Thanks!!
it is important to note that Clairaut's theorem is not absolute, there are certain exceptions.
Playing this in my sleep. Hopefully the sleep-study thing is right
I like your sweatshirt. Thanks for the help with math!!!! (I need it)
I went through your final review and couldn't find any problems regarding the flux of an object? And my final is coming up in a week!
Sorry man. I never learned abt flux when I was in calc 3. I assume that has to do with vector calc (divergence & curl). If you need that, check out the part 3 video.
Flux is Stokes's Theorem
Really good! Thank you
You are my GOAT
Hey Ludus, could you direct me to where I would find problems about the flux?
Random, but I noticed the 3x3 rubiks cube behind you, what's the highest order cube you can solve?
"Nobody really wants to sit through that and cram it in one night"
me watching this the night before my exam
did you pass? I got 2 days to study and it was either watch every single vid over again or watch these. Is it worth it?
@@nickkoteff4777 yes i highly recommend them, got an A in the class.. you got it!
tik tok brought me
Mr BurritoMan - Glad to have you on board!
On #3, we never stated the Domain which was requested as part of the problem. Is it just "t contained in all Real Numbers" ?
THANK YOUU BRO
Thank you
I actually love lagrange multipliers so the slander is painful haha
Why does the equation of a plane seem wrong, where is the x-x_0
Calc Final: 6 days
Confidence: 6
Brain Cells: maybe 2
Windows: 5
Fingers: 10...*confused mumbles*...yeah, 10 for sure
tears: yes
Grades: Don't ask
GPA: Who can say
This video: 5 stars
Time wasted writing this: Not too sure
Level of enjoyment currently: Immense
Curious how did it go?
what is the formula B(t) for? We used all the other ones in question #4 but not that one.
B(t) is for the binormal vector :))
u r clutch
1:37:33
I wish I saw this earlier before I decided to drop 209
exactly like me............
Great video. Terrible class. Exam is tomorrow 😥
i love you.
Me watching this as a freshman in highschool..
oof my final is tomorrow
1:17:20 lmao
clutch
thank you