Question

If x² + y² = 1, then ____________.

विकल्प

• yy” – (2y’)² + 1 = 0

• yy” + (y’)² + 1 = 0

• yy” – (y’)² – 1 = 0

• yy” + (2y’)² + 1 = 0

Answer 1

If x² + y² = 1, then yy” + (y’)² + 1 = 0.