Compute the Riemann sum for the double integral R (8x – 3y) dA, where R = [1,7] × [1,5], for the grid shown in the figure. 5 3 1 1 3 5 7 (Give an exact answer. Use symbolic notation and fractions where needed.) S3,2 = Compute the Riemann sum for the double integral fR (8x – 3y) dA, where R = [1,7] × [1,5], for the sample points shown in figure. 5 3 1 3 5 7 (Give an exact answer. Use symbolic notation and fractions where needed.) S32 =

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