# integrate with respect to x this function with a trig identity

• Apr 2nd 2012, 06:10 AM
bobmarly12345
integrate with respect to x this function with a trig identity
integrate with respect to x :

(x² - x + cosx) dx
• Apr 2nd 2012, 06:16 AM
emakarov
Re: integrate with respect to x this function with a trig identity
Integral of a sum is a sum of integrals. Which of x2, x and cos(x) do you have trouble integrating?
• Apr 2nd 2012, 06:18 AM
bobmarly12345
Re: integrate with respect to x this function with a trig identity
the cos(x) part i have trouble with
• Apr 2nd 2012, 06:56 AM
emakarov
Re: integrate with respect to x this function with a trig identity
$\int\cos x\,dx=\sin x+C$.