3.8 The integral √2²¹³ x³e¯x² dx is approximated by Simpson's 3/8 rule with 9 intervals. Let f(x) = x³e-x² . Find the sum of the first three f(x) in the formula 9h whose weights are (a) 0.0038 (b) 0.1364 (c) 0.1278 (d) 0.1346

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