1. ## integration

how do i integrate ... $x^3 . sqrt(x)$

i know that the integral of x^3 is x^4/4 and also the sqrt(x) is (x^3/2)/(3/2)

but im not sure how to do them together...

2. Originally Posted by b00yeah05
how do i integrate ... $x^3 . sqrt(x)$

i know that the integral of x^3 is x^4/4 and also the sqrt(x) is (x^3/2)/(3/2)

but im not sure how to do them together...

$x^3 \sqrt{x} = x^3 x^{1/2} = x^{7/2}$. Now use the usual rule for integrating $x^n$.