- Видео 129
- Просмотров 72 104
Mad Maths
Добавлен 28 апр 2020
All things maths.
Curve Sketching using Derivatives | Example 2: Polynomial Function
Here we try to sketch a polynomial using derivatives.
Просмотров: 17
Видео
Curve Sketching using Derivatives | Lesson and Example 1: Rational Function
Просмотров 32 часа назад
Here we cover how to sketch curves with the help of derivatives.
Calculus Application Question 3 | Maximum and Marginal Profit
Просмотров 37 часов назад
Here we answer questions about the maximum and marginal profit using derivatives and the profit function.
Calculus Application Question 1 | Position, Velocity, & Acceleration of a Particle
Просмотров 47 часов назад
Here we use derivatives to answer questions about a particle's displacement, velocity, and acceleration, based on a sinusoidal function modeling it's position.
Calculus Application Question 2 | Height, Velocity, & Acceleration of a Ball
Просмотров 47 часов назад
Here we use derivatives to answer questions about the height, velocity, and acceleration of a soccer ball, given a quadratic function that models it's position over time.
Derivatives: Rules for Exponentials and Logarithms
Просмотров 314 часов назад
Here we look at the rules for deriving exponential and logarithmic equations.
Derivatives: The Quotient Rule
Просмотров 314 часов назад
Here we take a look at utilizing the quotient rule for derivatives.
Derivatives: The Chain Rule
Просмотров 314 часов назад
Here we discover the chain rule for derivatives.
Difference Quotient: Finding an Instantaneous Rate of Change
Просмотров 2014 часов назад
Here we learn about the difference quotient and how it can be used to find rates of change.
Derivatives: Implicit Differentiation
Просмотров 14014 часов назад
Here we learn how to perform implicit differentiation.
Derivatives: Rules for Trigonometric Equations
Просмотров 7914 часов назад
Here we look at the derivative rules for the trigonometric functions.
Evaluating Limits: Strategies and Examples
Просмотров 16514 часов назад
Here we tackle some limit problems and look at some useful tips.
Lecture 2: Percent Applications in Business - OAG160
Просмотров 165Год назад
Lecture 2: Percent Applications in Business - OAG160
Partial Factoring to Find the Vertex
Просмотров 3,2 тыс.2 года назад
Partial Factoring to Find the Vertex
Sinusoidal Function Word Problems: Ferris Wheels and Temperature
Просмотров 40 тыс.2 года назад
Sinusoidal Function Word Problems: Ferris Wheels and Temperature
Intro to Graphing Sinusoidal Functions (y=sinx & y=cosx)
Просмотров 1992 года назад
Intro to Graphing Sinusoidal Functions (y=sinx & y=cosx)
The Squirrel Question (Trigonometry Word Problem)
Просмотров 1322 года назад
The Squirrel Question (Trigonometry Word Problem)
Intro to Identities + Proofs (Pythagorean and Quotient Identities)
Просмотров 472 года назад
Intro to Identities Proofs (Pythagorean and Quotient Identities)
Finding the Average and Instantaneous Rates of Change
Просмотров 92 года назад
Finding the Average and Instantaneous Rates of Change
Factoring a Sum or Difference of Cubes
Просмотров 122 года назад
Factoring a Sum or Difference of Cubes
x^2＋y^2=100
good explanation
Very clear explanation 👍🏻
Watching this one day before a math exam🤞
why would 360/period work instead of 2pi/period ? i thought you had to do it in radians?
It depends on which units you decide to use. If you are using radians then use 2pi. If you are using degrees then use 360.
Thank you so much for this explanation. You saved my exams🎉
Happy to help!
ty!
I have a question for you MadMath, If you have a h(t) graph and your hight as you mentioned is changing faster and faster then it changes slower and slower to a position momentarily at the Max and Min point when the hight does not change , on your hight vs time graph , then isn't it exactly the definition of changing your speed? You say that the speed does not change!
The vertical speed is changing, yes. (As is your horizontal speed.) The speed the wheel is rotating is not changing though. Basically, your height off the ground might change a different amount in a 1 second period vs another 1 second period, not because of the speed of the wheel, but because of your location on the wheel at that time. This might be tricky to imagine but I tried my best to explain it in the video.
@@madmaths7895 Thank you for clarifying what you meant. But of course the speed of the wheel is not changing. It rotates once every 100 second. However the speed of a person in a cart rotating is continually changing. No?
@@ElizavetaAleksandraPetrovna The person's speed vertically changes, yes. (It may be more appropriate to refer to this as their velocity.) But their speed does not change, no. They travel around the center of the wheel in a circular path at a constant speed.
@@madmaths7895 I see. Thank you. I will take physics next year. I know a bit now but I think that's where I lack knowledge. I understand that the speed is constant but the velocity is changing because the path isn't straight and the direction is continually changing. I must dig deeper to understand when I can say from the given information if I can have constant speed while I have acceleration? What you are saying about constant speed make sense so I am missing something. Many thanks for further explanation.
Is it assumed that the wheel is moving with a constant speed?
Yes it is.
a lot better than my teacher amazing amazing job
YOU SAVED ME BIG TIME TODAY, MATH TEST IS IN 25 MINUTES AND I DID NOT UNDERSTAND THIS CONCEPT AT ALL CUS MY NOTES WERE TRASH. THANK YOU
Thanks guy
This saved my life tysm I’m so glad I can understand now!
You don't even know how good this explanation was. I've been struggling with this and suddenly it feels easy.
Happy to help.
What if all terms are negative so for example -3x^2 - 30x - 75?
In general, if there is a coefficient in front of the x^2 like in your example, you would want to use Decomposition rather than the sum-product method. However, this looks like a case where you could common factor first. Factor a -3 out of all the terms, then you could use the sum-product method. You would get -3(x^2 + 10x + 25), then -3(x+5)(x+5), or -3(x+5)^2
X will have 2 values 25 and one over 25
Thanks ❤❤
Soo underrated
thanks man ur the goat
a fabulous explanation with proper application, thank you.
We would be happier if you could have written the second question completely with the parts. Thank you
How do you actually do the math for 10^-11.6. I tried on my calculator and I just get an error
Try putting the -11.6 in a bracket. A scientific calculator will make this easier.
You are a lifesaver, thank you SO MUCH.
thanks very underrated! also on an exam u would likely be allowed to use a calc for finding height and specific time? right?
Yes, usually you just use a calculator.
How about 3 digits multilp cation
thank you so much dude 🙏🏾🙏🏾 i’m taking honors pre calc next year hope u help out some more
One of the best Ferris Wheel Problem explanation I’ve seen
Very helpful!❤
aren't you supposed to use 2pi instead of 360
thats what i thought
pi = 180, 2pi = 360 degrees. They're interchangable.
2pi is in radians, 360 is in degrees. He's currently using degrees.
what about finding time of when you reach a specific height for 4,5,6th time for example?
The video shows that
when i put it into desmos it doesnt make any sense at all. is there a correct way to input it? i am struggling.
ME RN
When do you figure out if there is a phase shift or not?
Thank you 😭🙏
you don't know me. But I want to give you a hug. I understand it. Thank you so much. I love that you explain why everything on your graph is labelled how it is. Thank you
What other topics do you want me to cover? Check out the channel for more tutorials!
What other topics do you want me to cover? Check out the channel for more tutorials!
What other topics do you want me to cover? Check out the channel for more tutorials!
What other topics do you want me to cover? Check out the channel for more tutorials!
What other topics do you want me to cover? Check out the channel for more tutorials!
What other topics do you want me to cover? Check out the channel for more tutorials!
What other topics do you want me to cover? Check out the channel for more tutorials!
I love your videos. Great job! I use these to help my son learn the content. Very clear and lucid explanations. Thank you!
where did he get the 40 from when he was doing the feriis wheel last question
I was just showing that you could be asked a follow-up question like "when is the height 40ft?" 40 would be given to you in the question.
How did u get 36 as the vertical shift, wouldn’t it be 6 since that’s the initial starting point ?
The vertical shift is the distance from the axis (or midline) to the x-axis. Not from the lowest point.
I was late to my Geometry class and couldn't take the notes, so thanks for the tutorial!
Thank you so much
The question did specify to use a sinusoidal function, so does not that imply using a transformation of h - sin(t)?
Sinusoidal functions refer to both sine and cosine functions!
How did you get inverse of Cos ( 4 / 30 ) with an answer of 97.66 ... when I put that into my calculator .. inverse of Cos ( 4 / 30 ) .. I got 82 . 3377 .. where am I going wrong ?
It is because you are taking the cos inverse of negative 4/30. I forgot to write the negative in the next line. My bad. But the answer remains 97.66.
Just needed a quick review before my professional aptitude test. Thank you.
Thanks