Find the derivative for these:= 6

yxe^{−kx So for this I'm getting 6-ke^x }

y= (square root the whole equation)

This one I'm not entirely sure how to do, maybe (a-b)^2?

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- Oct 23rd 2012, 06:02 PMOldspice1212Derivative
*Find the derivative for these:*= 6

y*xe*^{−kx So for this I'm getting 6-ke^x }

*y*= (square root the whole equation)

This one I'm not entirely sure how to do, maybe (a-b)^2?

- Oct 23rd 2012, 06:33 PMrichard1234Re: Derivative
Your question's pretty unclear, but I'm assuming you want to find dy/dx?

For the first one, you have to use the product rule:

$\displaystyle \frac{dy}{dx} = 6(e^{-kx} + x(e^{-kx})(-k))$, then simplify.

The second one's just a chain rule problem. I don't know what you're referring to when you say $\displaystyle (a-b)^2$... - Oct 23rd 2012, 06:38 PMOldspice1212Re: Derivative
Sorry about that, it's fixed, yes it was to find the derivative for these questions :P

So is the first one e^-kx(6-6kx)?