I"ve got another one,

$\displaystyle \int_{0}^{5} (10e^{x} - 5cos(x))dx$

my work, so far $\displaystyle \int_{0}^{5} (- 5cos(x) + 10e^{x} )dx = (-5sinx + 10e^{x}) $

is that right until here, because the next step is just replacing the values of x, and I suppose the mistake is before that (I did that too, just don't think it is needed here)...