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Diketahui f ( x ) = 3 x + 1 dan ( f ∘ g ) ( x ) = 6 x 2 + 9 x + 4 . Rumus fungsi g ( x ) adalah ...

Diketahui  dan . Rumus fungsi  adalah ...

  1. ... space space space 

  2. ... space space space 

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A. Khairunisa

Master Teacher

Mahasiswa/Alumni Universitas Negeri Semarang

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.

 begin mathsize 14px style straight g left parenthesis straight x right parenthesis equals 2 straight x squared plus 3 straight x plus 1 end style.

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Jadi, .

begin mathsize 14px style space space space space space space straight f left parenthesis straight g left parenthesis straight x right parenthesis right parenthesis equals 6 straight x squared plus 9 straight x plus 4 3 left parenthesis straight g left parenthesis straight x right parenthesis right parenthesis plus 1 equals 6 straight x squared plus 9 straight x plus 4 space space space space space space 3 left parenthesis straight g left parenthesis straight x right parenthesis right parenthesis equals 6 straight x squared plus 9 straight x plus 3 space space space space space space space space space space space straight g left parenthesis straight x right parenthesis equals 2 straight x squared plus 3 straight x plus 1 end style

Jadi, begin mathsize 14px style straight g left parenthesis straight x right parenthesis equals 2 straight x squared plus 3 straight x plus 1 end style.

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Diketahui fungsi f ( x ) = 1 + x 2 ​ dan ( f ∘ g ) ( x ) = x − 2 1 ​ x 2 − 4 x + 5 ​ . Rumus fungsi g ( x + 3 ) = ...

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