MHT CET202013 Oct 2020Morning ShiftMathematicsDifferentiationActual
If x²+y²=1 , then d² x d y² =
Options
- Ax³
- By³
- C- 1 x³
- 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 ]