Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
KCET2011MathematicsArea Under Curves

If the area between y=m x² and x=m y²(m>0) is 1 / 4 sq units, then the value of m is

Options

  1. A3 2
  2. B2 3
  3. C2
  4. D3

Correct answer

B. 2 3

Step-by-step solution

Given curves; y=m x² and y² m=x ; m>0 Intersection point of both curves; x=m (m x² )²=m³ x⁴ m³ x⁴-x=0 array cc & x (m³ x³-1 )=0 & x(m x-1) (m² x²+1+m x )=0 & x=0, x=1 / m and y=0, y=1 / m array We take only the points =(0,0) and (1 / m, 1 / m) Now, the area of the curve aligned &= ₀^ 1 / m ( x m -m x² ) d x Given, 1 4 &= [ 2 3 m x^ 3 / 2 -m x³ 3 ]₀^ 1 / m 1 4 &= [ 2 3 m 1 m^ 3 / 2 - m 3 1 m₃ ] 1 4 &= 2 3 m² - 1 3 m² 1 4 &= 1 3 m² m²= 4 3 m= 2 3 aligned

Practice Area Under Curves on Quantrex Academy →

More from Area Under Curves

Find the area bounded by the curve y = |2 - x| , the x –axis, and the lines x = 0 and x = 5 2026The area enclosed by the curve y = -x^2 and the line x + y + 2 = 0 is 2026The area of the region bounded by the line y = x + 2 and the curve x = -y^2 is 2026The area of the region in the first quadrant enclosed by the x -axis, the line x = 3 ,y and the circle x^2 + y^2 = 4 is 2026The area of the region bounded by the curve y^2 = x^3 , the y -axis and the lines y = 1 and y = 8 is 2026The area enclosed by the curve x = 3 , y = 3 is 2026The area in square units of the region bounded by the curve y = 16 - x^2 and lines x = 0, x = 4 above the X-axis is 2026The area bounded by the curves y = |x| - 1 and y = -|x| + 1 is 2026 Full Area Under Curves list All KCET PYQs