Question says Show that the substitution $\displaystyle u = e^x$ converts

$\displaystyle \int \frac{2 + ln u}{u^2} du$ into

$\displaystyle \int \frac{2 + x}{e^e} dx$

I understand how ln e^x = xlne = x .

But Why does u^2 become e^x ? Would it become e^x squared?

Angus