xy=sec(tan^(-1)x)" ald "pi x=1" anving "(dy)/(dx)=

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

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

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

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