JEE PYQ: Area Under Curves Question 30
Question 30 - 2019 (09 Jan Shift 2)
The area of the region $A = {(x, y) : 0 \leq y \leq x|x| + 1$ and $-1 \leq x \leq 1}$ in sq. units is:
(1) $\frac{2}{3}$
(2) 2
(3) $\frac{4}{3}$
(4) $\frac{1}{3}$
Show Answer
Answer: (2) 2
Solution
Area $= \int_{-1}^{0}(-x^2+1),dx + \int_0^1 (x^2+1),dx = \frac{2}{3} + \frac{4}{3} = 2$.