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Chris Chappa
Добавлен 9 июн 2018
Instructional videos for my classes 😎
Logic Puzzle Week of 11-04-24 Solution (Islands in the Stream, a.k.a. Nurikabe)
Logic Puzzle Week of 11-04-24 Solution (Islands in the Stream, a.k.a. Nurikabe)
Просмотров: 20
Видео
Trigonometry Video 5.3.6 Using Sum and Difference Formulas (Example 2)
Просмотров 1219 часов назад
Based on Pearson's Trigonometry 12e by Lial, Hornsby, Schneider and Daniels. Chapter 5 - Trigonometric Identities Section 3 - Sum and Difference Identities Video 6 - Using Sum and Difference Formulas (Example 2)
Trigonometry Video 5.3.5 Using Sum and Difference Formulas (Example 1)
Просмотров 2819 часов назад
Based on Pearson's Trigonometry 12e by Lial, Hornsby, Schneider and Daniels. Chapter 5 - Trigonometric Identities Section 3 - Sum and Difference Identities Video 5 - Using Sum and Difference Formulas (Example 1)
Trigonometry Video 5.3.4 Deriving the Tangent Sum and Difference Formulas
Просмотров 2219 часов назад
Based on Pearson's Trigonometry 12e by Lial, Hornsby, Schneider and Daniels. Chapter 5 - Trigonometric Identities Section 3 - Sum and Difference Identities Video 4 - Deriving the Tangent Sum and Difference Formulas
Trigonometry Video 5.3.3 Deriving the Sine Sum and Difference Formulas
Просмотров 1419 часов назад
Based on Pearson's Trigonometry 12e by Lial, Hornsby, Schneider and Daniels. Chapter 5 - Trigonometric Identities Section 3 - Sum and Difference Identities Video 3 - Deriving the Sine Sum and Difference Formulas
Trigonometry Video 5.3.1 Deriving the Cosine Difference Formula
Просмотров 5019 часов назад
Based on Pearson's Trigonometry 12e by Lial, Hornsby, Schneider and Daniels. Chapter 5 - Trigonometric Identities Section 3 - Sum and Difference Identities Video 1 - Deriving the Cosine Difference Formula
Trigonometry Video 5.3.2 Deriving the Cosine Sum Formula
Просмотров 2919 часов назад
Based on Pearson's Trigonometry 12e by Lial, Hornsby, Schneider and Daniels. Chapter 5 - Trigonometric Identities Section 3 - Sum and Difference Identities Video 2 - Deriving the Cosine Sum Formula
Trigonometry Video 5.2.9 Verifying an Identity (Example 8)
Просмотров 1414 дней назад
Based on Pearson's Trigonometry 12e by Lial, Hornsby, Schneider and Daniels. Chapter 5 - Trigonometric Identities Section 2 - Verifying Trigonometric Identities Video 9 - Verifying an Identity (Example 8)
Trigonometry Video 5.2.8 Verifying an Identity (Example 7)
Просмотров 2114 дней назад
Based on Pearson's Trigonometry 12e by Lial, Hornsby, Schneider and Daniels. Chapter 5 - Trigonometric Identities Section 2 - Verifying Trigonometric Identities Video 8 - Verifying an Identity (Example 7)
Trigonometry Video 5.2.7 Verifying an Identity (Example 6)
Просмотров 1914 дней назад
Based on Pearson's Trigonometry 12e by Lial, Hornsby, Schneider and Daniels. Chapter 5 - Trigonometric Identities Section 2 - Verifying Trigonometric Identities Video 7 - Verifying an Identity (Example 6)
Trigonometry Video 5.2.6 Verifying an Identity (Example 5)
Просмотров 3014 дней назад
Based on Pearson's Trigonometry 12e by Lial, Hornsby, Schneider and Daniels. Chapter 5 - Trigonometric Identities Section 2 - Verifying Trigonometric Identities Video 6 - Verifying an Identity (Example 5)
Trigonometry Video 5.2.5 Verifying an Identity (Example 4)
Просмотров 1414 дней назад
Based on Pearson's Trigonometry 12e by Lial, Hornsby, Schneider and Daniels. Chapter 5 - Trigonometric Identities Section 2 - Verifying Trigonometric Identities Video 5 - Verifying an Identity (Example 4)
Trigonometry Video 5.2.4 Verifying an Identity (Example 3)
Просмотров 1614 дней назад
Based on Pearson's Trigonometry 12e by Lial, Hornsby, Schneider and Daniels. Chapter 5 - Trigonometric Identities Section 2 - Verifying Trigonometric Identities Video 4 - Verifying an Identity (Example 3)
Trigonometry Video 5.2.4a Verifying an Identity (Example 3 - PDF)
Просмотров 3714 дней назад
Based on Pearson's Trigonometry 12e by Lial, Hornsby, Schneider and Daniels. This is a continuation of Trigonometry Video 5.2.4 Verifying an Identity (Example 3), with the work shown in a PDF to illustrate a good way to organize your work when verifying a trig identity.
Trigonometry Video 5.2.3 Verifying an Identity (Example 2)
Просмотров 2314 дней назад
Based on Pearson's Trigonometry 12e by Lial, Hornsby, Schneider and Daniels. Chapter 5 - Trigonometric Identities Section 2 - Verifying Trigonometric Identities Video 3 - Verifying an Identity (Example 2)
Trigonometry Video 5.2.2 Verifying an Identity (Example 1)
Просмотров 1814 дней назад
Trigonometry Video 5.2.2 Verifying an Identity (Example 1)
Trigonometry Video 5.2.1 Important Algebraic Maneuvers
Просмотров 4314 дней назад
Trigonometry Video 5.2.1 Important Algebraic Maneuvers
Trigonometry Video 5.1.9 Simplifying Trig Expressions (Example 2)
Просмотров 1314 дней назад
Trigonometry Video 5.1.9 Simplifying Trig Expressions (Example 2)
Trigonometry Video 5.1.7 Rewriting One Trig Function in Terms of Another (Example 2)
Просмотров 1414 дней назад
Trigonometry Video 5.1.7 Rewriting One Trig Function in Terms of Another (Example 2)
Trigonometry Video 5.1.8 Simplifying Trig Expressions (Example 1)
Просмотров 1514 дней назад
Trigonometry Video 5.1.8 Simplifying Trig Expressions (Example 1)
Trigonometry Video 5.1.6 Rewriting One Trig Function in Terms of Another (Example 1)
Просмотров 1814 дней назад
Trigonometry Video 5.1.6 Rewriting One Trig Function in Terms of Another (Example 1)
Trigonometry Video 5.1.5 Evaluating Trig Functions Using Identities (Example 3)
Просмотров 2114 дней назад
Trigonometry Video 5.1.5 Evaluating Trig Functions Using Identities (Example 3)
Trigonometry Video 5.1.4 Evaluating Trig Functions Using Identities (Example 2)
Просмотров 1514 дней назад
Trigonometry Video 5.1.4 Evaluating Trig Functions Using Identities (Example 2)
Trigonometry Video 5.1.3 Evaluating Trig Functions Using Identities (Example 1)
Просмотров 1714 дней назад
Trigonometry Video 5.1.3 Evaluating Trig Functions Using Identities (Example 1)
Trigonometry Video 5.1.2 Even and Odd Identities
Просмотров 1814 дней назад
Trigonometry Video 5.1.2 Even and Odd Identities
Trigonometry Video 5.1.1 Review of Pythagorean, Reciprocal, and Quotient Identities
Просмотров 6514 дней назад
Trigonometry Video 5.1.1 Review of Pythagorean, Reciprocal, and Quotient Identities
Trigonometry Video 4.2.1 Changing the Amplitude of Sine and Cosine
Просмотров 2628 дней назад
Trigonometry Video 4.2.1 Changing the Amplitude of Sine and Cosine
Trigonometry Video 4.2.5 Sketching a Graph Using Quarter-Periods
Просмотров 9428 дней назад
Trigonometry Video 4.2.5 Sketching a Graph Using Quarter-Periods
Trigonometry Video 4.2.4 Changing the Periods of Other Trig Functions
Просмотров 2428 дней назад
Trigonometry Video 4.2.4 Changing the Periods of Other Trig Functions
Trigonometry Video 4.2.3 Changing the Period of Sine and Cosine
Просмотров 3428 дней назад
Trigonometry Video 4.2.3 Changing the Period of Sine and Cosine
This is good but should have used calculus to show monotonic increasing aspect.
Nice presentation. Very clear.
Impressive video, Chris Chappa. Looking forward to your next upload from you. I smashed the thumbs up button on your content. Keep up the fantastic work! Your breakdown of the fundamental identities was incredibly clear. How do you suggest approaching the memorization of these identities for students who struggle with retention?
I always emphasize comprehension over memorization. If you UNDERSTAND where something comes from (like Pythagorean Identities, or PI's), you can RECONSTRUCT them in case you forget them. But if you just want to focus on memorization, I would memorize sin^2 + cos^2 = 1 (which seems to be the easiest PI to memorize). This is a direct consequence of the coordinates of an arc s on the unit circle being (cos(s), sin(s)). Then I would memorize the reciprocal identities, which allow you to transform sin^2 + cos^2 = 1 into the other two PI's. Lastly, I would memorize tan = sin/cos, because you can reciprocate both sides to get cot = cos/sin.
thank you chris
You are very welcome
Excellent explanation. Thank you very much!
I really appreciate it!
I'm starting college in Spring 2025 so I'm just preparing for some of the classes I might struggle with. Your video series really does help and I'm so thankful that you upload these videos for free. You rule man!
Awesome! Good luck when you start college!
I really appreciate the way you explain thing, Prof
Thank you very much!
That's an awesome explanation.Sets you up for vectors too.Good work teach!!
Thank you :-)
studying for my calc ii midterm, explaining the relative max/min thing better than my professor could. thank you!!
I appreciate the feedback!
THANK YOU!!! i watched all 6 parts!! you explained it very well. I was stuck on my homework. now I understand. 😁
I am very happy to hear that! I made these for my classes when COVID hit, but I'm happy they help others as well!
Despite what most consumers believe, the Rule of 78s simply determines how much of the total interest (finance) charge is due and payable (earned) at a particular point in time during the loan. Of course the rest of the total interest (finance) charge is unearned. The amount of interest earned and unearned in these types of loans is not calculated as a percentage of the remaining principle, rather it is determined by the Rule. The Rule itself says nothing about having to pay the exact monthly minimum payment or pay off the whole loan in a single lump sump versus making an intermediate payment (i.e. an amount above the minimum but not enough to pay the loan off in full). The Rule simply determines how much interest is earned and unearned at a particular point in time during the loan. The payoff amount at any point in time would always be: Principle + Total Finance Charge + Fees/Late Charges/Etc - Unearned Interest - Payments . . . .
I believe everything you just said. I am by no means an expert in financial math, but I am confident that if I studied it more rigorously than what is necessary to prepare for this survey course, I would appreciate it more.
Hello, thank you for these videos I am taking mathematics for teachers 1 and this has been hard to learn with my current professor
I am happy to hear that I'm helping you. Sometimes, there is a disconnect between a student's learning style and a professor's preferred teaching style. It's not a slight against either when they don't mesh. As a future teacher, you should be aware that you have to learn to adapt to your students' learning styles the best you can.
tan(θ - 10°) = cot(90° - (θ - 10°)) = cot(80° - θ) that was the answer shown, but shouldn't it be cot(100° - θ) ? cot(90° - (θ - 10°)) cot(90° - θ + 10°) cot(100° - θ)
Would you believe I made that error on purpose to see if anyone is actually trying the problems at the end of each video? No? Ok, full disclosure: I very well could have been half awake during the creation of this video. I actually had to take down one video for that reason and rerecord it. (Nice catch, Nathan 😎)
"cosine of beta is the sine of beta's complement or the complement's sine which is a sine of alpha because that's the complement of beta" I had to laugh at how complex that sounds, even though it's pretty simple lol
Sometimes I sacrifice clarity at the altar of accuracy :-/
My claim is that only 33.33% of your videos in any playlist is in its correct position.
I've noticed that some of them are out of order for reasons I can't explain. I've fixed some of them.
thank you so much
You are welcome 🙂
10/10
Thank you!
Hello Professor Chappa, At the 9:06 mark in the video, could I right the and to f-1(x) as 1/3 - 1? or does it have to be written the way you had it as x-1/3?
1/3 x - 1/3 is not only correct, but in my opinion preferable. I preferable fractions in front of my variables instead of my variables inside my fractions!
@@chrischappa962 Makes sense, do you have any other MATH 2312 or MATH 2413 content from Tyler?
I have an unpublished series for MATH 2412 at TJC (which is the same as MATH 2312 at UTT) that I made for an online dual credit class. It's unpublished because I address some of the students by name in those videos. But if there is a specific topic in 2312 you need help with, let me know and I can send you a direct link (if I have that topic)
You are an amazing teacher ! Thank you
I greatly appreciate that!
Hi Professor, do you know if you had chapter 13.1 voting method posted?
I'm sorry, I do not. That is not a section we cover in my class.
Thank you so much for this video❤
You are so welcome!
"X"cellent, Professor! We've been going through Transformations for the past two classes where I teach (we meet once a week). Neither does our Pre-Calculus text cover a combined horizontal scaling and shift, for some lame reason.
Thank you! I never feel the topic is adequately covered in most textbooks.
(p v q)^ ~(p ^ q)
Thanks, Mr. Chris, you really helped me out.
You are very welcome!
Function f(x) = 0
Well done :-)
one to one or one x to one y! Thats brilliants thank you so much!!
You're welcome!
thanks pimp
Very helpful to create a tool for work in Excel. Thanks
You are welcome!
Nice and clear👏
Thank you 🙂
this really helped me, thankyou so much for the video you saved me some time to revise other topics you're such a great teacher
Glad it helped! I appreciate the compliment!
Hi! great video! I have one question tho. What. does the result at the end tell us about. the association between the two variables?
The answer is in the next video: ruclips.net/video/eyg-0TCO10c/видео.html
Thank you!
You're welcome!
Amazing work👏
Thanks a lot 😊
Good luck!!!
I'm working on those skills. Rather than be frustrated over something we can't control. Good job King 👑🤗✈️
You are a saint my good sir and made this so easy to understand. Mind blown
Wow, thanks!
is there any other universal rule for cusp?
Most likely. Why was there a cusp in the first example? Because one function's derivative switched from between negative and positive at t=0, but the other one didn't. I leave it as an exercise to the reader to categorize more rigorously the conditions that determine a cusp (in which case, I invite the reader to concoct a more formal definition of wat a cusp even is!).
6:25
Inclusive or vs. exclusive or is ambiguous in English--we rarely specify which we mean. In informal speech, people usually mean exclusive or in contexts like this--"or else" is assumed.
I do not disagree with you. For the sake of rigor, in logic, "or" is defined inclusively. However, there are some unambiguous instances of the inclusive or in informal speech. For example, "In order to be admitted to Pompous University, you must score 1500 on the SAT or 32 on the ACT." If you satisfy both criteria, that's not cause for rejection of admission.
Thanks. Just saw this on mobius in my class and it wasn't clicking. I feel better about it now.
started playing xordle because of you lol
It is quite the addictive game!
lol!
:-)
you’re my hero other people complicate it on other videos, as soon you said reciprocate my head dumbs it down to opposite and clicks everything, I have no more issues thank you!
I'm so glad I could help!
Awesome explanation
Thank you!
Well understandable, Thank you!
You're welcome!
could've just cancelled out the x?
Of course, but what fun is that?
5:59 Slight clarification: a grey U-shaped region can be formed adjacent to the hypothetical white one, but it has to overlap the 2 clue, violating the clue.
I had noticed that after I had made the video, but didn't want to record it for a fourth time (don't ask XD)
Please start teaching Math 1332, not all Professor are realistic about helping their students. We need more of you.
I do teach MATH 1332!