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

Find the derivative of the function.

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 ...
- Calculus - What would an example of a logarithmic function that contains two ...
- math - I have the same project as Jill down there... -What is the definition of ...
- Calculus - What would an example of a logarithmic function that contains a ...
- calculus - Find the derivative using the chain rule. f(x) = ((3x-7)/(6x+3))^4 f...
- Math - Calculus Question. - hey can someone explain to me the relationship ...
- Calculus - Use a symbolic differentiation utility to find the derivative of the ...
- Calc - I'm creating a "calculu for dummies" project book. I've already done most...
- Math - Consider the following where s is in feet and t is in seconds. s(t) = t^3...
- calculus - Please help, my live tutor and I could spent 2 hours trying to solve ...

More Related Questions