1. The problem statement, all variables and given/known data http://img296.imageshack.us/img296/7923/img0192re9.jpg [Broken] 3. The attempt at a solution Hope you can see what I've written on the top of the page, but basically I want to find the antider. of f(x) from 1 to 4 (from the graph I suppose). So that should be the negative area under the graph plus the little triangle just above the x axis?