Question

let A={1,2,3,4,5},B=W and f:A--->B is defined by f(x)=x^2-1 find the range of f

Answer 1

Answer:

f={0,3,8,15,24}

Step-by-step explanation:

A={1,2,3,4,5}

B={W}={0,1,2,3,.....}

given that p(x)=x^2-1

let set A be the values of X

f(1)=1^2-1=0 = (1,0)

f(2)=2^2-1=3 = (2,3)

f(3)=3^2-1=8 = (3,8)

f(4)=4^2-1=15 =(4,15)

f(5)=5^2-1=24 =(5,24)

range of f

={0,3,8,15,24}