If the area of the region bounded by the curves \(y=4-\frac{x^2}{4}\) and \(y=\frac{x-4}{2}\) is equal to…

If the area of the region bounded by the curves \(y=4-\frac{x^2}{4}\) and \(y=\frac{x-4}{2}\) is equal to \(\alpha\), then \(6 \alpha\) equals
  1. 250
  2. 210
  3. 240
  4. 220

Solution


$\begin{aligned} & \text { Area }=\int_{-6}^4\left\{\left(4-\frac{x^2}{4}\right)-\left(\frac{x-4}{2}\right)\right\} d x \\ & =\int_{-6}^4\left\{-\frac{x^2}{4}-\frac{x-6}{2}\right\} d x \\ & \alpha=-\frac{x^3}{12}-\frac{x^2}{4}+\left.6 x\right|_{-6} ^4=\frac{125}{3} \\ & \therefore 6 \alpha=250\end{aligned}$

Asked in: JEE Main 2025 (07 Apr Shift 1)

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