Suppose that f(x, y) = 2x + 2y and the region D is given by {(x, y) | −4 ≤ x ≤ 1, −4 ≤ y ≤ 1}. D Then the double integral of f(x, y) over D is | | f(x, y)dady = D

Let A₁ be the set {(x, y): x² + y² ≤ 1} and let A₂ be the set in R2 bounded by the lines y - 2x = -1, y - 2x = 1, y + 3x = 4, and y + 3x = 8. Compute the following integrals by introducing suitable substitutions: (a) | (+s)dedy Question 5 A1 (1-2² - y²) dxdy (b)(