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Diketahui f left parenthesis 3 x space minus space 1 right parenthesis space equals space minus space 6 x space plus space 7. Nilai dari t left parenthesis 5 right parenthesis space minus space 3 f left parenthesis 1 right parenthesis = ...

  1. 14

  2. 12

  3. 8

  4. -12

  5. -14

N. Mustikowati

Master Teacher

Mahasiswa/Alumni Universitas Negeri Jakarta

Jawaban terverifikasi

Pembahasan

straight f left parenthesis 3 straight x space minus space 1 right parenthesis space equals negative 6 straight x plus space 7 space

Invers dari straight y space equals space 3 straight x space minus 1 adalah

straight y to the power of negative 1 end exponent equals fraction numerator straight x plus 1 over denominator 3 end fraction  straight f left parenthesis straight x right parenthesis space equals space minus 6 open parentheses fraction numerator straight x plus 1 over denominator 3 end fraction close parentheses plus 7  equals negative space 2 left parenthesis straight x plus 1 right parenthesis plus space 7 space  equals space minus 2 straight x minus 2 plus space 7 space  equals space minus space 2 straight x plus 5    straight f left parenthesis 5 right parenthesis space equals space minus 2 left parenthesis 5 right parenthesis plus 5 space equals space minus space 10 space plus space 5 space equals space minus space 5  straight t left parenthesis 1 right parenthesis space equals space minus 2 left parenthesis 1 right parenthesis space plus space 5 space equals negative 2 plus space 5 space equals space 3  straight t left parenthesis 5 right parenthesis minus 3 straight f left parenthesis 1 right parenthesis space equals space minus 5 space minus space 3 left parenthesis 3 right parenthesis space equals negative 5 minus space 9 space equals negative 14

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