" If "y=tan^(-1)((a cos x-b sin x)/(b cos x+a sin x))," then "(dy)/(dx)" is: "

y=tan^(-1)((a cos x-b sin x)/(b cos x+a sin x)), where -(pi)/(2) -1

If y= tan^(-1)((a cos x-b sin x)/(b cos x+a sin x))" show that, " (dy)/(dx)= -1 .

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

If y=tan^(-1)[(5cos x-12sin x)/(12cos x+5sin x)], then (dy)/(dx)=

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

If y = Tan^(-1)[(5 cos - 12 sin x)/(12 cos x + 5 sin x)] , then (dy)/(dx) =

"If "y=tan^(-1)((a cos x- b sin x)/(b cos x + a sin x)), (b/a)tanx lt 1"where "-(pi)/(2)ltxlt(pi)/(2)" then find "(dy)/(dx).