If `y=tan^(- 1)((p sinx+qcosx)/(pcosx-qsinx)),"then"(dy)/(dx)=`

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

If y=tan^(-1)(( sin x + cosx)/(cosx-sinx)) then (dy)/(dx) is equal to

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

If y=tan^(-1)[(sinx+cosx)/(cosx-sinx)] then (dy)/(dx) is

If y=tan^(-1)[(sinx+cosx)/(cosx-sinx)] then (dy)/(dx) is

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

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

If y = tan^(-1){(cos x + sinx)/(cos x - sin x)} " then " (dy)/(dx) = ?

If y=tan^(-1)((cos x+1)/sinx) ,then the value of " (dy)/(dx) =