10. Let B denote the following "bowtie" region in R-: (-2, 1) (2, 1) B (-2, -1) (2, -1)(a) Write down the double integral of f(x, y) over B using vertical slices: f(z, y) dy dx (b) Write down the double integral of f(x, y) over B using horizontal slices: f(x, y) dr dy + f(x, y) dady All you need to do is determine the terms that should go in the boxes. You don't need to evaluate any integrals