Marshall Reyes
12/24/2023 · Middle School

Find the Riemann Sum for \( f(x)=\cos (x) \cdot \cos (2 x)+2 \) in \( x \epsilon[-10,10] \) (unit of \( x \) is radians). Exact solution is \( A=39.12663501441301 \). Hand-calculate the area under the curve using 10 rectangles and mid-point method.

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The Riemann Sum using the midpoint method with 10 rectangles is approximately 37.599.

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