Recent content by SciGuy26

How would I find static friction given the following information: V= 45km/hr Time to decelerate completely from 45km/hr: 3.5s The motion of the object given is of a moving vehicle. There is a cup on the dashboard inside the vehicle that moves only when deceleration time is less than or...

nm... Solution should be as follows: -2xsin(x^2) dy/du= sin(u) du/dx= 2x -2xsin(u) + -2xsin(U) -2xcos(u) + -2sin(u) = 2x(-2xcos(x^2) + -2sin(x^2)) Could someone please confirm? Thank you for the help.

So I'd have 2xcos(u) + -2sin(u) How am I to use the chain rule at this point? Ugh I don't understand how combine rules with composite functions.

Homework Equations Take the second derivative of: cos(x^2) The Attempt at a Solution cos(x^2) dy/du = -sin(u) du/dx = 2x dy/dx= -2xsin(x^2) I don't know how to begin taking the derivative of this a second time...