JEE Main2005MathematicsHyperbolaActual
The locus of a point P( , ) moving under the condition that the line y= x+ is a tangent to the hyperbola x^2 a^2 - y^2 b^2 =1 is
Options
- Aan ellipse
- Ba circle
- Ca parabola
- Da hyperbola
Correct answer
D. a hyperbola
Step-by-step solution
Tangent to the hyperbola x^2 a^2 - y^2 b^2 =1 is y=m x a^2 m^2-b^2 Given that y= x+ is the tangent of hyperbola m= and a^2 m^2-b^2= ^2 a ^2 ^2- b ^2= ^2 Locus is a^2 x^2-y^2=b^2 which is hyperbola.