Area Under Curves Question 7

Question 7 - 2024 (29 Jan Shift 2)

Let the area of the region $\left{(x, y): 0 \leq x \leq 3,0 \leq y \leq \min \left{x^{2}+2,2 x+2\right}\right}$ be $A$. Then $12 \mathrm{~A}$ is equal to

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Answer (164)

Solution

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$\mathrm{y}=2 \mathrm{x}+2$

$A=\int_{0}^{2}\left(x^{2}+2\right) d x+\int_{2}^{3}(2 x+2) d x$

$A=\frac{41}{3}$

$12 A=41 \times 4=164$