9 + 3x /1 + x2 dx evaluate integral\\ Find the area: y = 8 cos(2x), y = 8 − 8 cos(2x), 0 ≤ x ≤ π/2////// Find the volume of the solid obtained by rotating the region bounded by the given curves about the x-axis. y = 3 − 3x2, y = 0 Find the volu

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