Evaluate the following integrals over the given domains. (a) (4x2 +9y²)dx dy Rectangle with vertices (0,0), (3,0), (3,2), and (0,2). fa-x)dx dy Triangle bounded by positive x and y axes, line y = 4- 2x. (b) Region bounded by positive y-axis, line y = v3x, circle x* + y? = 4. (c) xy dxdy | xy dxdy Region bounded by positive x-axis, line y v3x, circle x2 + y? = 4. (d)

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