Question

11. A function f' is defined by f(x) = x2 + 3, x e N and x <= 5.
(1) Find the range of f.
(in) Find f (2) x f (5).
(iii) Does f(-3) exist ?
(iv) Find x when f(x) = 7.
Find the domain of the 11​

Answer 1

Step-by-step explanation:

1. put x=1,2,3,,45 one by one different values obtained for f(x) by this step will be range of this function.
2. f(2)= 2^2+ 3=7

and, f(5)= 5^2+ 3= 28

therefore, f(2)*f(5)= 7*28= 196

3. no f(-3) does not exist because x belong to natural no. and -3 is not a natural number.

4. 7= x^2+3

x=2

5. domain is {1,2,3,4,5}