MHT CET20192 May 2019Morning ShiftMathematicsDifferentiationActual
If x = a sin - 1 t , y = a cos - 1 t , then d y d x = ………
Options
- A- y x
- Bx y
- Cy x
- D- x y
Correct answer
A. - y x
Step-by-step solution
If x = a s i n - 1 t y = a c o s - 1 t Then, s i n - 1 t = l o g a x 2 and c o s - 1 t = l o g a y 2 Then, 2 l o g e a l o g e x + l o g e y = π 2 Differentiate both sides w.r.t. x We get, 1 x + 1 y d y d x = a ⇒ d y d x = - y x