If `y=tan^(-1)""(cosx+sinx)/(cosx-sinx)," then find "(dy)/(dx).`

If y=(sinx)^(cosx) , then find (dy)/(dx) .

If y=(sinx)/(x+cosx) , then find (dy)/(dx) .

If y=(sinx)/(x+cosx) , then find (dy)/(dx) .

If y="tan"^(-1)((cosx-sinx)/(cosx+sinx)) , then (dy)/(dx)=

If y=tan^(-1)((sinx+cosx)/(cosx-sinx))," then "(dy)/(dx)" at "x=(pi)/(4)

Find- tan^-1((cosx+sinx)/(cosx-sinx))

If y=(sinx)^cosx , then find (dy)/(dx) .

Solve: tan^(-1)((cosx-sinx)/(cosx+sinx))

If y=tan^(-1)((sinx+cosx)/(cosx-sinx)) , then (dy)/(dx) is equal to (a) 1/2 (b) 0 (c) 1 (d) none of these