Let A₁$A_{1}$ be the bounded area enclosed by the curves y = x² + 2$y = x^{2} + 2$, x + y = 8$x + y = 8$ and y-axis that lies in the first quadrant. Let A₂$A_{2}$ be the bounded area enclosed by the curves y = x² + 2$y = x^{2} + 2$, y² = x$y^{2} = x$, x = 2$x = 2$, and y-axis that lies in the first quadrant. Then A₁ - A₂$A_{1} - A_{2}$ is equal to
For A₁$A_1$: Intersection of y = x² + 2$y = x^2 + 2$ and x + y = 8$x + y = 8$.
x + (x² + 2) = 8 ⇒ x² + x - 6 = 0 ⇒ (x+3)(x-2) = 0$x + (x^2 + 2) = 8 \Rightarrow x^2 + x - 6 = 0 \Rightarrow (x+3)(x-2) = 0$.
In first quadrant, x = 2$x = 2$. Intersection point is (2, 6)$(2, 6)$.
Area A1 boundaries visualization
For A₂$A_2$: Enclosed by y = x² + 2$y = x^2 + 2$, y = √(x)$y = \sqrt{x}$, x=2$x=2$ and y-axis.
Upper curve: y = x²+2$y = x^2+2$, Lower curve: y = √(x)$y = \sqrt{x}$.
Area A1 boundaries visualization
Carefully identify the bounding regions. A₁$A_1$ uses a line as the upper bound, A₂$A_2$ strips away a root curve as its lower bound. Integrating separately before subtracting avoids algebraic alignment errors.
Q5jee_main_2024_31_jan_morningArea bounded by Parabolas and Inequalities
The area of the region (x,y): y² ≤ 4x, x < 4, (xy(x - 1)(x - 2))/((x - 3)(x - 4)) > 0, x ≠ 3$\left\{(x,y): y^2 \le 4x, x < 4, \frac{xy(x - 1)(x - 2)}{(x - 3)(x - 4)} > 0, x \neq 3\right\}$ is
A.(16)/(3)$$\frac{16}{3}$$
B.(64)/(3)$$\frac{64}{3}$$
C.(8)/(3)$$\frac{8}{3}$$
D.(32)/(3)$$\frac{32}{3}$$
Solution
Core Logic
Given y² ≤ 4x$y^2 \le 4x$ and x < 4$x < 4$.
Analyze the inequality (xy(x-1)(x-2))/((x-3)(x-4)) > 0$\frac{xy(x-1)(x-2)}{(x-3)(x-4)} > 0$ considering y > 0$y > 0$ and y < 0$y < 0$ separately.
Area bounded by Parabolas and Inequalities diagram for Q5 - JEE Main 2024 Morning
Step 1: Case I (y > 0)
If y > 0$y > 0$, the inequality reduces to (x(x-1)(x-2))/((x-3)(x-4)) > 0$\frac{x(x-1)(x-2)}{(x-3)(x-4)} > 0$.
Using wavy curve method and given x in (0, 4)$x \in (0, 4)$:
x in (0, 1) (2, 3)$x \in (0, 1) \cup (2, 3)$.
Step 2: Case II (y < 0)
If y < 0$y < 0$, the inequality reduces to (x(x-1)(x-2))/((x-3)(x-4)) < 0$\frac{x(x-1)(x-2)}{(x-3)(x-4)} < 0$.
Using wavy curve method and given x in (0, 4)$x \in (0, 4)$:
x in (1, 2) (3, 4)$x \in (1, 2) \cup (3, 4)$.
Step 3: Area Computation
Because the regions map perfectly without overlap in opposite quadrants relative to the x-axis, they form complete parabolic strips when combined:
Area = 2 ∫₀⁴ √(x) dx = 2 · (2)/(3)[x3/2]₀⁴ = (4)/(3) · 8 = (32)/(3)$= 2 \int_{0}^{4} \sqrt{x} dx = 2 \cdot \frac{2}{3}[x^{3/2}]_{0}^{4} = \frac{4}{3} \cdot 8 = \frac{32}{3}$.
Chapter Mix
Class 12 Maths: Area Under Curves
Class 11 Maths: Linear Inequalities
More Application of Integrals Questions — jee_main_2026_24_january_morning
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