If `f(x)=(1-sin^(2)x)/(1+sin^(2)x)," then "3f'((pi)/(4))-f((pi)/(4))=`

If f(x)=((sin^(2)x)/(1+cotx))+(cos^(2)x)/(1+tan) , then f'((pi)/(4)) is :

If : f(x)=(sin^(2)x)/(1+cotx)+(cos^(2)x)/(1+tanx)," then: "f'((pi)/(4))=

If : f(x)=(sin^(2)x)/(1+cotx)+(cos^(2)x)/(1+tanx)," then: "f'((pi)/(4))=

If f(x ) = (sin^(2)x)/(1+cot x) + (cos^(2))/(1+tan x) then f((pi)/(4)) is

if f(x)=x^(3)-2x^(2)+3x-5, then f(sin(5(pi)/(2)))+f(sin(3(pi)/(2)))=

let f(x)=e^(cos-1)sin(x+(pi)/(3)) then f((8 pi)/(9)) and f((-7 pi)/(4))

If f_(n)(x) = (sin x)/(cos3x)+(sin 3x)/(cos 3^(2)x) +(sin 3^(2)x)/(cos 3^(3)x) +....+ (sin 3^(n-1)x)/(cos 3^(n)x)"Then" f_(2) ((pi)/(4)) + f_(3) ((pi)/(4))=

If f(x)=(|x|)^(|sin|), then f'((-pi)/(4)) is-

f (x) = ln (sin x) ^ (2) then f ((pi) / (4)) =

let f(x)=e^(cos^(-1)sin(x + pi/3)) then f((8pi)/9) and f((-7pi)/4)