" If "y=sec(tan^(-1)x)," then "(dy)/(dx)=?

If y="sec"(tan^(-1)x),t h e n (dy)/(dx) at x=1 is (a) cos(pi/4) (b) sin(pi/2) (c) sin(pi/6) (d) cos(pi/3)

If y=log(sec x+tan x), then (dy)/(dx)=

If y=sec(tan^(-1)x) , then value of dy/dx at x=1 is

If y = sec(tan^-1x) , then dy/dx at x =1 is equal to

If y=tan^(-1)(sec x+tan x) then (dy)/(dx) =

If y= sec ( tan sqrt x ) ,then (dy)/(dx) =

If y=sec(tan^(-1)x) , then (tan^(-1)x) , then (dy)/(dx)" at "x=1 is equal to

If y = (tan x-1)/(sec x) then dy/dx=?

If y = tan^(-1) (sec x + tan x) " then " (dy)/(dx)= ?