I'm having problems finding the area between the x-axis and the function |2x-3| on the domain (-1,2). So what I have been trying to do is integrate |2x-3| to get 2x^2/2-3x. Then plug in 2-(-1)=3 into the equation to obtain 0. This is incorrect. The answers that are written in the back of the book tell me that the answer should be 13/2. What am I doing wrong?