If `f(x)=cot^(- 1)((x^x-x^(-x))/2)` then `f'(1)=`

f(x) = Cot^(-1)((x^x-x^(-x))/(2)) then f^(1)(1)=

The range of f(x)=cot^(-1)(2x-x^(2)) is

f(x)=cot^(- 1)(x^2-4x+5) then range of f(x) is equal to :

f(x)=cot^(- 1)(x^2-4x+5) then range of f(x) is equal to :

f(x)=cot^(-1)(x^(2)-4x+5) then range of f(x) is equal to :

f(x)=cot^(- 1)(x^2-4x+5) then range of f(x) is equal to :

If f(x)=2 x cot ^(-1)x + log (sqrt(1+x^2)-x then f(x)

If f(x)=log((1+x)/(1-x)), then (a) f(x_(1))f(x)=f(x_(1)+x_(2))(b)f(x+2)-2f(x+1)+f(x)=0 (c) f(x)+f(x+1)=f(x^(2)+x)(d)f(x_(1))+f(x_(2))=f((x_(1)+x_(2))/(1+x_(1)x_(2)))