Let `f` be a function `f(x)=x+3`,`x ∈ N`, Find the pre-image of `20,25,50`.

Let f be a function f(x)=5x+2 , x∈N , Find the image of 3,4,5 .

If a function f:RtoR is defined by f(x)=x^(2)+1 , then pre-images of 17 and -3 respectively, are

Let f(x) be a function such that f'(a) ne 0 . Then , at x=a, f(x)

Let f be a function defined on [0,2]. Then find the domain of function g(x)=f(9x^2-1)

Let f: R->R be a function given by f(x)=x^2+1. Find: f^(-1){-5}

Let f: R->R be a function given by f(x)=x^2+1. Find: f^(-1){26}

Let f: RrarrR be defined by f(x) = x^2 + 1 Then, pre images of 17 and -3 respectively, are

Let f:N->N be defined by f(x)=x^2+x+1,x in N . Then f(x) is

Let A={x:-1 le x le 1}=B be a function f: A to B. Then find the nature of each of the following functions. (i) f(x) = |x| " (ii) " f(x)=x|x| (iii) f(x)=x^(3) " (iv) " f(x)="sin"(pi x)/(2)

Let f be a real valued function defined by f(x)=x^2+1. Find f'(2) .