If `Y = e^x cos x`, then find `d^2y/dx^2`

If y = e^x tan x , then find d^2y/dx^2

If y=e^x sinx then find d^2 y/dx^2

If y = (cos x)^2 + (x)^cos x , then find dy/dx .

Find (d^2y)/(dx^2) in the following If x = a (theta + sin theta) , y = a(1 - cos theta) , find (d^2y)/(dx^2) at theta = pi/2

Find the second order derivative of the following functions If y = cos^(-1) x , find (d^2y)/(dx^2) in terms of y alone.

If (cos x)^y = (cos y)^x then find dy/dx .

If y = a sin x + b cos x , find (d^2y)/(dx^2) in terms of y.

lf y = cos x , then d^2y/dx^2 at x = pi is equal to :

If [x= a{theta - sin(theta)] and [y= a{1 - cos (theta)] find [d^2y/dx^2 at (theta = pi/2)

If y = tan^-1 x , find (d^2y)/(dx^2) in terms of y alone.