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AP EAMCET · Maths · Differential Equations

If x2+y2=1, then

  1. A yy-2y2+1=0
  2. B yy+y2+1=0
  3. C yy-y2-1=0
  4. D yy+2y2+1=0
Verified Solution

Answer & Solution

Correct Answer

(B) yy+y2+1=0

Step-by-step Solution

Detailed explanation

Given, x2+y2=1 On differentiating w.r.t. x, we get 2x+2yy'=0 ⇒ x+yy'=0 Again, differentiating, we get 1+yy''+y'2=0