![problem solving - How to calculate the derivative of cos(x) in Calculus Made Easy - Mathematics Stack Exchange problem solving - How to calculate the derivative of cos(x) in Calculus Made Easy - Mathematics Stack Exchange](https://i.stack.imgur.com/TyX9F.png)
problem solving - How to calculate the derivative of cos(x) in Calculus Made Easy - Mathematics Stack Exchange
![SOLVED: A formula for the derivative of a function f is given. How many critical numbers does f have? f^'(x)=(100 cos ^2 x)/(10+x^2)-1 SOLVED: A formula for the derivative of a function f is given. How many critical numbers does f have? f^'(x)=(100 cos ^2 x)/(10+x^2)-1](https://cdn.numerade.com/ask_previews/c422450c-7b48-4a4d-a443-fd0f55c200f3_large.jpg)
SOLVED: A formula for the derivative of a function f is given. How many critical numbers does f have? f^'(x)=(100 cos ^2 x)/(10+x^2)-1
![A particle executes SHM according to equation x = 10 cos[2pi t + pi / 2] , where t is in second. The magnitude of the velocity of the particle at t = 1/6s will be: A particle executes SHM according to equation x = 10 cos[2pi t + pi / 2] , where t is in second. The magnitude of the velocity of the particle at t = 1/6s will be:](https://haygot.s3.amazonaws.com/questions/1476622_1290087_ans_c07f7d51e12a46c290425947d247943d.jpg)
A particle executes SHM according to equation x = 10 cos[2pi t + pi / 2] , where t is in second. The magnitude of the velocity of the particle at t = 1/6s will be:
![Cos(2x) Formula: Overview & Uses | Solving the Derivative of Cos(2x) - Video & Lesson Transcript | Study.com Cos(2x) Formula: Overview & Uses | Solving the Derivative of Cos(2x) - Video & Lesson Transcript | Study.com](https://study.com/cimages/videopreview/xttnoo6auk.jpg)