Jawabanmu

2014-05-10T12:48:28+07:00
G(2x) = 2.(2x)^2 - 4.2x +1
         = 8x^2 - 8x +1
2014-05-10T17:16:36+07:00
Klau beda inversin dlu
f(x) = x+2
f invers (x) = x-2
substitusi (x-2) ke pers:
2(x-2)^2 + 4 (x-2) + 1
= 2 (x^2 - 4x + 4) + 4x-8+1
= 2x^2-8x+8+4x-8+1
=2x^2-4x+1

g(2x) = 2(2x)^2 - 4(2x) + 1= 8x^2-8x+1