Prove that the straight line touches the parabola

MATHEMATICS · Subjective · CBSE · Mathematics · Conic Sections · Conic Sections

Problem

Prove that the straight line lx+my+n=0lx + my + n = 0 touches the parabola y2=4axy^2 = 4ax , if ln=am2ln = am^2 .

Related theory

Browse the problem library