Q37 of 63 Page 202

State whether the statements True or False. Justify

The line lx + my + n = 0 will touch the parabola y2 = 4ax if ln = am2.

lx + my + n = 0, y2 = 4ax & ln = am2


Solving both the above mentioned expressions,


Putting the value of in the equation of the line,



As the line touched parabola, above equations must have equal roots.


Discriminant (D) = 0





Hence proved.


TRUE


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