WBJEE · Maths · Parabola
If \(t_1\) and \(t_2\) be the parameters of the end points of a focal chord for the parabola \(y^2=4 a x\), then which one is true?
- A \(\mathrm{t}_1 \mathrm{t}_2=1\)
- B \(\frac{t_1}{t_2}=1\)
- C \(\mathrm{t}_1 \mathrm{t}_2=-1\)
- D \(\mathrm{t}_1+\mathrm{t}_2=-1\)
Answer & Solution
Correct Answer
(C) \(\mathrm{t}_1 \mathrm{t}_2=-1\)
Step-by-step Solution
Detailed explanation
Hints : \(\mathrm{t}_1 \mathrm{t}_2=-1\) Fact
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