5.1 q2 Part (a)Estimate the area under the graph of f(x) = cos(x) from x = 0 to x = π/2. Use four approximating rectangles and right endpoints. Is your estimate an underestimate or an overestimate?Step 1 of 4Rectangle areas are found by calculating height x width.The width of each rectangle equals Ax and the height of each rectangle is given by the function value at the right-hand side of the rectangle.So we must calculate R₁ =i = 1F(x;)Ax = [f(x1) + f(x₂) + f(x3) + f(x4)] Ax, where x₁, X2, X3, X4 represent the right-hand endpoints of four equal sub-intervals of [0,1].Since we wish to estimate the area over the interval [0, using 4 rectangles of equal widths, then each rectangle will have width 4x =Submit Skip (you cannot come back)Click here to begin!Part (b)Estimate the area under the graph of f(x) = cos(x) from x = 0 to x = π/2. Use four approximating rectangles and left endpoints. Is your estimate an underestimate or an overestimate?

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Part (a) Estimate the area under the graph of f(x) = cos(x) from x = 0 to x = x/2. Use four approximating rectangles and right endpoints. Is your estimate an underestimate or an overestimate? Step 1 of 4 Rectangle areas are found by calculating height x width. The width of each rectangle equals Ax and the height of each rectangle is given by the function value at the right-hand side of the rectangle. So we must calculate R₁ = f(x;)&x = [f(x1) + f(x₂) + f(x3) + f(x4)] 4x, where x₁, X₂, x3, x4 represent the right-hand endpoints of four equal sub-intervals of [0,1]. Since we wish to estimate the area over the interval [0] using 4 rectangles of equal widths, then each rectangle will have width 4x = Submit Skip (you cannot come back) Part (b) Estimate the area under the graph of f(x) = cos(x) from x = 0 to x= x/2. Use four approximating rectangles and left endpoints. Is your estimate an underestimate or an overestimate? Click here to begin!