A double integral
The first assignment from our online presentations page asks you to compute a double integral. You should choose your double integral by forum login name and answer the question by responding here. For example, the web page says that my double integral is:
$$\int _0^1\int _0^3\left(-3 x^2-4 x y+9 y^2\right)dydx.$$
Thus, if I were going to answer the question, then that's the integral I should work out.