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MHT CET202013 Oct 2020Morning ShiftMathematicsDifferentiationActual

If x²+y²=1 , then d² x d y² =

Options

  1. A
  2. B
  3. C- 1 x³
  4. D-y³

Correct answer

C. - 1 x³

Step-by-step solution

We have x²+y²=1 array l 2 x+2 y d y d x =0 2 y d y d x =-2 x d y d x =- x y d x d y =- y x array Differentiating w.r.t. y we get d² x d y² = [ x(1)-y d x d y x² ]=- [ x-y ( -y x ) x² ]=- [ x²+y² x³ ]=- 1 x³ [ x²+y²=1 . , given ]

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