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Q.The condition that the chord joining (at12,2at1)(at_1^2, 2at_1) and (at22,2at2)(at_2^2, 2at_2) to the parabola y2=4axy^2 = 4ax is focal chord is

a
t1t2=−1t_1 t_2 = -1
b
t1t2=1t_1 t_2 = 1
c
t1+t2=1t_1 + t_2 = 1
d
t1+t2=−1t_1 + t_2 = -1

Correct Answer: Option A

The correct solution involves applying the fundamental concept to derive the final value step by step...

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