If f(x) = `( x ( x -1 ) )/2` then f( x + 2 )

If f(2x + 1 ) = x + 1 , then f(x^2) =

If f(x)=(x(x-1))/(2), then the value of f(x+2) is-

If f(x)=sqrt(x^(2)-2x+1), then f' (x) ?

If f(x)=(x-1)/(x+1) then f(2x) is equal to

If f(x)=log((1+x)/(1-x)), then f(x) is (i) Even Function (ii) f(x_(1))-f(x_(2))=f(x_(1)+x_(2)) (iii) ((f(x_(1)))/(f(x_(2))))=f(x_(1)-x_(2)) (iv) Odd function

If f(x)=(x+1)/(x-1) , then the value of f(f(2)) is

If f(x)=1+2x and g(x) = x/2 , then: (f@g)(x)-(g@f)(x)=

If f(x)=(1)/(x)-1 where x ne 0, then: f(x)-2.f(2x)=