Home
Class 12
MATHS
Let f : NN to NN : f(x) =2 x for all ...

Let ` f : NN to NN : f(x) =2 x` for all `x in NN` then `f` is

A

one-one and onto

B

one - one and into

C

many -one and onto

D

many -one and into

Text Solution

Verified by Experts

The correct Answer is:
B
`2X=3 rArr x = (3)/(2) !in N . ` so f is into
Promotional Banner

Similar Questions

Explore conceptually related problems

Let f : N to N : f(x) =2 x for all x in N Show that f is one -one and into.

Let f : N rarr N be defined as f(x) = 2x for all x in N , then f is

Let f be a function from a set X to X, such that (f(f(x)) = x, for all x in X , then

Let f:X rarr X be such that f(f(x))=x for all x in X and X sube R, then

Let f be differentiable for all x, If f(1)=-2 and f'(x)>=2 for all x in[1,6] then find the range of values of f(6)

Let f:R to R such that f(x+y)+f(x-y)=2f(x)f(y) for all x,y in R . Then,

Let f(sin x)+2f(cos x)=3 for all x in R Fird f(x)