Find the Riemann sum for f(x) = 3 sin x, 0 ≤ x ≤ 3π/2,with s

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Find the Riemann sum for f(x) = 3 sin x, 0 ≤ x ≤ 3π/2,with six terms?

(a)Find the Riemann sum for f(x) = 3 sin x, 0 ≤ x ≤ 3π/2,with six terms, taking the sample points to be right endpoints. (Round your answers to six decimal places.) find R6=?
(b) Repeat part (a) with midpoints as the sample points.find M6=?

0,π/4,π/2,3π/4,π,5π/4,3π/2
0,3√2/2,3,3√2/2,0,-3√2/2,-3
Right points,so the sum= 3√2/2
Left points 就是左边6个点,Right 就是右边六个点
midpoint,就是求每个中间点,就是上面一排的中间点,求所对应的X 函数值.

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