Question: please answer Use a Left Riemann sum with n = 3 rectangles to approximate the area under the curve f (x) = x2 - x

please answer

Use a Left Riemann sum with n = 3 rectangles to approximate the area under the curve f (x) = x2 - x + 2 on the interval [0, 3].Calculate the volume of the solid of revolution created by rotating the region bounded by f (x) = 2x + 1, x = 0, x = 1, and the x-axis, around the x-axis. Round your answer to 2 decimal places and use it ~ 3.14. Answer: Find the area bounded by the curves f(x) = 3x2 - 3x - 15 and g(x) = 3x + 30

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