Question

if f (x) = x + 2 ÷ 3x - 1 then find f(f (x))​

Answer 1

Answer:

f(x)=x

2

−3x+1

f(2α)=(2α)

2

−3(2α)+1=4α

2

−6α+1

f(2α)=2f(α)

∴4α

2

−6α+1=2(α

2

−3α+1)

4α

2

−6α+1=2α

2

−bα+2

4α

2

+1=2α

2

+2

2α

2

=1 α=±

2

1