Thursday

January 29, 2015

January 29, 2015

Posted by **Jonah** on Tuesday, March 6, 2007 at 7:18am.

y= xcosx - sinx

What's the derivative?

I get only one trig function. I will be happy to critique your work or thinking. Use the chain rule on the first term.

Our class hasn't covered Chain Rule. Only product and quotient rule. Apparently the work should go...

y= -xsinx + cosx - cosx

I get where the -xsinx and -cosx came from. But the +cosx?

Nevermind. I figured it out. Used the product rule on the xcosx, then found the derivative of the -sinx.

**Answer this Question**

**Related Questions**

calculus - Could someone check my reasoning? thanx Find the derivative of the ...

Math - Find the distance function s(t) if you know the acceleration function a(t...

Calculus - Use a symbolic differentiation utility to find the derivative of the ...

Calculus - An airplane flies at an altitude of 5 miles toward a point directly ...

Math - derivative of sinusoidal (check) - a) Find a function y=f(x) that ...

calculus - Prove that xcosx< sinx for 0<x<(5π/4) -differentiate ...

calculus - Find the derivative of the function using the definition of ...

calculus - You are given the following function. f(x)= (8+x)/(1-8x) (a) Find the...

Math - Consider the following where s is in feet and t is in seconds. s(t) = t^3...

Calculus. I need help! - Write the composite function in the form f(g(x)). [...