TOLONG BANTU JAWAB PLEASE, TERIMAKASIH :”)​

( f o g ) (x) = f [ g(x) ]

4x + 6 = f [ 2x + 3 ]

Misalkan :

2x + 3 = a

x = ( a – 3 ) / 2

f(a) = 4 ( a – 3 / 2 ) + 6

f(a) = 2 ( a – 3 ) + 6

f(a) = 2a – 6 + 6

f(a) = 2a

Sehingga diperoleh f(x) = 2x