This gives us 1 M4 = [8 cos(1) 9 + 8 cos 64 Cos(24) + 8 cos(255) + 8 cos(4)] 49 64 64 × (rounded to six decimal places) Therefore, using the Midpoint Rule with n = 4 and rounding to six decimal places we have 1 8 cos(x²) dx≈ Х

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