# Math Help - Evaluate the definite integral of e^x - cos(x)

1. ## Evaluate the definite integral of e^x - cos(x)

I"ve got another one,

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

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

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)...

2. ## Re: Evaluate the definite integral of e^x - cos(x)

Hey dokrbb.

You got the anti-derivative part right: now just evaluate F(5) - F(0) and you're done.

3. ## Re: Evaluate the definite integral of e^x - cos(x)

Originally Posted by chiro
Hey dokrbb.

You got the anti-derivative part right: now just evaluate F(5) - F(0) and you're done.
cool, I just checked my calculator and it was set to DEG instead of RAD, that's why I was getting wrong numbers,

thanks