Practicing Success
The area lying between the curves y2 = 4x and y = 2x is : |
$\frac{2}{3}$ 1 $\frac{1}{3}$ $\frac{1}{4}$ |
$\frac{1}{3}$ |
y2 = 4x , y = 2x point of intersection y = 2x y2 = 4x ⇒ (2x)2 = 4x ⇒ x2 = x ⇒ x = 1, 0 area = area under y2 = 4x - area under y = 2x so area = $\int\limits_0^1-2 x+2 \sqrt{x} d x$ $=\left[-x^2+\frac{4}{3} x^{3 / 2}\right]_0^1=\frac{4}{3}-1$ $= \frac{1}{3}$ sq. units |