what does F' (x)' mean?

[eiei0]

I dont quite understand what this question is asking me to do:

If F(x) = \(\displaystyle \int_{x}^{4x}(1/t)dt\) then F' (x)' = ?

when i integrated it i got ln 4x - lnx = ln 4, but from there where do i go?

 

[galactus]

You are asked to find the derivative of the integral.

Try using this:

\(\displaystyle \frac{d}{dx}\int_{h(x)}^{g(x)}f(t)dt=f(g(x))g'(x)-f(h(x))h'(x)\)

 

[eiei0]

wouldnt that just be F'(x)? why is there a ' after the (x) as well?

 

[galactus]

I don't know. Perhaps a typo?.