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Black Book Advanced Problems in MathematicsMathematicsContinuity and Differentiability

If x y = where is constant and (- 2 , 2 ) then d^2 y dx^2 at ( 4 , 4 ) equals to :

Options

  1. A0
  2. B1
  3. C2
  4. D3

Correct answer

A. 0

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