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We are asked to show that (f(x) = 2x^2 + 3x + 5), (x \in [0,1]), is Riemann integrable using both definitions and verify that both give the same result. Let’s solve step by step. --- Step 1: Using the Definition of Riemann Integrability via Upper and Lower Sums 1. Partition ([0,1]) into (n) subintervals of equal width: [ \Delta x = \frac{1-0}{n} = \frac{1}{n}, \quad x_i = \frac{i}{n}, \ i=0,1,2,\dots,n ] 2. Function values on subintervals ([x_{i-1}, x_i]): Since (f(x) = 2x^2 + 3x + 5) is increasing on ([0,1]) _________ ______ _________ ___ _____ __________ ____ ______ ___.
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