" 7.If "f:R rarr(-1,1)" is defined by "f(x)=(-x|x|)/(1+x^(2))" then "f^(-1)(x)" equals "

If f:R rarr(-1,1) is defined by f(x)=-(x|x|)/(1+x^(2)), then f^(-1)(x) equals sqrt((|x|)/(1-|x|)(b)-sgn(x)sqrt((|x|)/(1-|x|))-sqrt((x)/(1-x))(d)) none of these

If f:R rarr(0, 1] is defined by f(x)=(1)/(x^(2)+1) , then f is

f:R rarr R defined by f(x)=(x^(2)+x-2)/(x^(2)+x+1) is

If f: R rarr R is defined by f(x)=(x)/(x^(2)+1) find f(f(2))

If f[1, oo)rarr[1, oo) is defined by f(x)=2^(x(x-1)) then f^(-1)(x)=

If f:[1, oo) rarr [1, oo) is defined as f(x) = 3^(x(x-2)) then f^(-1)(x) is equal to

If f:[1,oo)rarr[1,oo) is defined as f(x)=3^(x(x-2)) then f^(-1)(x) is equal to

f:R rarr R defined by f(x)=(x^(2)+x-2)/(x^(2)+x+1) is:

f:R rarr R defined by f(x)=(x)/(x^(2)+1),AA x in R is

If f:R rarr R is defined by f(x)=x/(x^2+1) find f(f(2))