The equation of the line touching both the parabolas and is then the value of is |

The equation of the line touching both the parabolas and is then the value of is |

1 Answer - 5876 Votes

3537

Equation of tangent in terms of slope of parabola is Eq.(i)is also tangent of Then Above equation must have equal roots, Hence its discriminant must be zero or Form Eq. (i), |