4. Evaluate ff(6a2 40y)dA, where D is the triangle with vertices (0,3), (1, 1) and...

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4. Evaluate ff(6a2 – 40y)dA, where D is the triangle with vertices (0,3), (1, 1) and (5,3) 5. Evaluate xds for each of the following curves: (a) C1: y = , -1<#<1. (b) C2: The line segment from (-1, 1) to (1, 1). 4. Evaluate ff(6a2 – 40y)dA, where D is the triangle with vertices (0,3), (1, 1) and (5,3) 5. Evaluate xds for each of the following curves: (a) C1: y = , -1<#<1. (b) C2: The line segment from (-1, 1) to (1, 1).