Question

If x² + y² = 1 then
(a) yy'' – 2(y')² + 1 = 0
(b) yy'' + (y')² + 1 = 0
(c) yy'' + (y')² – 1 = 0
(d) yy'' + 2(y')² + 1 = 0

Answer 1

mutiply both sides by zeros.

Answer 2

There u answer

Option (C) is correct