16.If `f:R rarr R`,where `f(x)=x^(2)+1`,then `f^(-1)(26)` is equal to : (A) `+-5` (B) `+-3` (C) `+-6` (D) None of these

If f:R->R , where f(x)=x^2+1 , then f^(-1)(-5) is

The function f:R rarr R, f(x)=x^(2) is

If f : R - {1} rarr R, f(x) = (x-3)/(x+1) , then f^(-1) (x) equals

if f(x) = x-[x], in R, then f^(')(1/2) is equal to

If function f : R rarr R^(+), f(x) = 2^(x) , then f^(-1) (x) will be equal to

If 2f(x)-3f(1/x)=x^2(x!=0), then f(2) is equal to (a) -7/4("b")""5/2 (c) -1 (d) none of these

If f: R rArr R and f(x)= 4x + 3 , then f^(-1) (x) is

Let f:(4,6)vec(6,8) be a function defined by f(x)=x+[x/2]dotw h e r e[dot] denotes the greatest integer function, then f^(-1)(x) is equal to (A) x-2 (B) x-[x//2] (C) -x-2 (D) none of these

If f : R rarr R , f(x) = 1/(x^2 - 1) , then domain is

If 8f(x)+6f(1/x)=x+5 and y=x^2(f(x), then (dy)/(dx) at x=-1 is equal to 0 (b) -1/(14) (c) -1/4 (d) None of these