And so whenever they actually want us to find the area or evaluate an integral where they give the endpoints or evaluate a derivative at a point, well that's a pretty good sign that you could probably use your calculator here. And what's extra good about this is we have already essentially inputted h of x in the previous steps and really in part a. I had defined this function here and this function is essentially h of x. I took the absolute value of it so it's always positive over either region, but I could delete the absolute value if we want. So let me delete that absolute value. Then I have to get rid of that parentheses at the end. So let me delete that. And so notice, this is h of x. We have our f of x, which is one plus x plus e to the x squared minus two x.