BITSAT2021MathematicsArea Under CurvesActual
The area bounded by the curves x+2 y²=0 and x+3 y²=1 is
Options
- A1 sq. unit
- B1 3 sq. units
- C2 3 sq. units
- D4 3 sq. units
Correct answer
D. 4 3 sq. units
Step-by-step solution
We have, x+2 y²=0 y²=- x 2 (i) a parabola with vertex (0,0) and x+3 y²=1 y²= 1-x 3 =- ( x-1 3 ) (ii), a parabola with vertex (1,0) Solving (i) and (ii), we get y= 1 A = _ -1 ¹ ( (1-3 y² )- (-2 y² ) ) d y=2 ₀¹ (1-y² ) d y=2 [y- y³ 3 ]₀¹= 4 3 sq.units