Hi, I need help with part (b). The answer is n=50.

6. Let f: [0,1] > R, f(:E) = 3:3. F01" n = 1, 2,3, . . ., let 73\" be the partition 1 2 1 79n={0,,,...,n ,1}. n n n n2(n | 1)2 'n a) Use the identity 2 k3 : to nd an explicit formula for the upper Riemann 1:21 sum E73\" for fol f b) HOW large does n need to be so that 330\" is Within 0.01 of the actual value of the integral