[Step-by-Step] Given f(x)=x^2+3 , find the exact area A of the region under f(x) on the interval [1, 3] by first computing ∑limits_i=1^nf(x_i)Δ x
Question: Given \(f\left( x \right)={{x}^{2}}+3\) , find the exact area A of the region under f(x) on the interval [1, 3] by first computing \(\sum\limits_{i=1}^{n}{f\left( {{x}_{i}} \right)\Delta }x\) and then taking the limit as n→∞.
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