The area of the region, bounded by the parabola $y=x^2+2$ and the lines $y=x, x=0$ and $x=3$, is

The area of the region, bounded by the parabola $y=x^2+2$ and the lines $y=x, x=0$ and $x=3$, is
  1. $\frac{9}{2}$ sq. units
  2. $\frac{11}{2}$ sq. units
  3. $\frac{15}{2}$ sq. units
  4. $\frac{21}{2}$ sq. units

Solution


$\begin{aligned} \text { Required area } & =\int_0^3\left(x^2+2-\dot{x}\right) \mathrm{d} x \\ & =\left[\frac{x^3}{3}+2 x-\frac{x^2}{2}\right]_0^3 \\ & =9+6-\frac{9}{2}-0 \\ & =\frac{21}{2} \text { sq. unit }\end{aligned}$

Asked in: MHT CET 2024 (03 May Shift 2)

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