is a constant
and independent of a and b.
Answer:
(x
? a)2 + (y ? b)2 = c2 ?.
(1)
Diff.
w.r.t. x.
2(x
? a) + 2 (y ? b)y1 = 0
?..
(2)
Diff.
again w.r.t.x.
[By
(1)]] ?. (3)
[by (2)
and (3)]
[by
(1)]
Independent
of a and b. Hence the result.
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