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Jika f(x)=x+2, g(x)=x3−1 dan h(x)=2x maka hasil dari (h∘g∘f)−1(2) adalah ....

Pertanyaan

Jika begin mathsize 14px style f left parenthesis x right parenthesis equals x plus 2 end style, begin mathsize 14px style g left parenthesis x right parenthesis equals x cubed minus 1 end style dan size 14px h size 14px left parenthesis size 14px x size 14px right parenthesis size 14px equals size 14px 2 size 14px x maka hasil dari begin mathsize 14px style open parentheses h ring operator g ring operator f close parentheses to the power of negative 1 end exponent open parentheses 2 close parentheses end style adalah ....

  1. ...space 

  2. ...space 

A. Nadhira

Master Teacher

Mahasiswa/Alumni Universitas Negeri Malang

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Pembahasan

begin mathsize 14px style open parentheses h ring operator g ring operator f close parentheses to the power of negative 1 end exponent open parentheses 2 close parentheses equals h open parentheses g open parentheses f open parentheses 2 close parentheses close parentheses close parentheses space space space space space space space space space space space space space space space space space space space space space space space equals 2 open parentheses open parentheses x plus 2 close parentheses cubed minus 1 close parentheses space space space space space space space space space space space space space space space space space space space space space space space equals 2 open parentheses open parentheses 2 plus 2 close parentheses cubed minus 1 close parentheses space space space space space space space space space space space space space space space space space space space space space space space equals 2 open parentheses 4 cubed minus 1 close parentheses space space space space space space space space space space space space space space space space space space space space space space space equals 126 end style

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