Question

if f:R→R, g :R→R are defined by f(x) = 3x-1, g(x) =x²+1 then find 1. gof(2a-3) 2. fog(2)​

Answer 1

Answer:

Answer

f(x)=3x−4

⇒f

−1

(x)=

3

x+4

;

g(x)=2+3x

⇒g

−1

(x)=

3

x−2

f

−1

(5)=

3

5+4

=3

(g

−1

of

−1

)(5)=g

−1

[f

−1

(5)]=g

−1

(3)

=

3

3−2

=

3

1