AP EAMCET202419 May 2024Evening ShiftMathematicsHyperbolaActual
The locus of the mid points of the chords of the hyperbola x^2-y^2=a^2 which touch the parabola y^2=4 a x is
Options
- Ax (y^2-x^2 )=a y^2
- Bx (x^2+y^2 )=y^2+x
- Ca x^3+y^3=3 x
- Dx (x^2-y^2 )=a^2
Correct answer
A. x (y^2-x^2 )=a y^2
Step-by-step solution
Let mid point of the chord of the given parabola is ( , ) equation of chord is x x₁-y y₁=x₁^2-y₁^2...(i) x- y= ^2- ^2 y= ^2- ^2 + x Now, this equation touches to the parabola y^2=4 a x So, - ( ^2- ^2 ) = a - (x^2-y^2 ) x=a y^2 (y^2-x^2 ) x=a y^2