Question

the same kind as the original conic.
Example 7. A circle passes through the foucs S of a conic and meets it in
four points whose distances from S are r 1, rz, rg and r 4:
r, and r . Prove that
1 1 1 1 2
'
r1 r2
where 21 is the latus-rectum of conic.
[Kanpur 1991, 92, 98, 99]
Solution Let the given conic be
+
+
T3
T4​

Answer 1

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