Jika diketahui f(x) = x + 3 dan g(x) = 2x2 – x, maka (gof)(x) =
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Penjelasan dengan langkah-langkah:
f(x) = x + 3
g(x) = 2x² – x
(gof)(x)
==>
(gof)(x) = g(f(x))
= g ( x + 3 )
= 2( x + 3 )² - ( x + 3 )
= 2( x² + 6x + 9 ) - x - 3
= 2x² + 12x + 18 - x - 3
= 2x² + 11x + 15
Semoga Membantu CMIW^_^
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