Question

F (x) = (3x - 2). find f^-1f (10)

Answer 1

f-¹f(10)=10

Answer:

Solution given:

f(x)=3x-2

let

y=3x-2

interchanging role of x and y

x=3y-2

y=
`(x+2)/(3)`

so

f-¹(x)=
`(x+2)/(3)`

now

f(10)=3*10-2=28

now

f-¹f(10)=f-¹(28)=
`(28+2)/(3)`=10