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3x + 8 - 4
(gof)x = 3x + 8
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3x + 4
invers gof :
Jika diket ax + b
--------
cx + d
inversnya -dx + b
---------
cx - a
jadi jawabnnya -4x + 8
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3x - 3
= D
(gof)(x) = 3x+8/3x+4
(gof)(x)^-1 = -4x+8/ 3x-3
menggunakan rumus invers ax+b/cx+d
menjadi -dx+b/cx-a