Posted by Elena on .
I am having a lot of trouble doing these types of problems. Can someone show me how to do this. Thank you for your time.
Evaluate the definite integral
4
x(x+3)dx
0

Calculus 
Reiny,
expand it first to get
⌠ (x^2 + 3x)dx from 0 to 4
⌡
= (x^3)/3 + (3/2)x from 0 to 4
= 64/3 + 6  0
= 82/3