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Evaluate the Riemann sum for f(x)=0.4x−1.8sin(2x)f(x)=0.4x-1.8sin(2x) over the interval [0,2][0,2] using four subintervals, taking the sample...

Evaluate the Riemann sum for f(x)=0.4x−1.8sin(2x)f(x)=0.4x-1.8sin(2x) over the interval [0,2][0,2] using four subintervals, taking the sample points to be right endpoints.

R4=

step by step with answer please

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