Roboguru

Diketahui     Tentukan

Diketahui   begin mathsize 14px style f left parenthesis x right parenthesis equals x plus 7 g left parenthesis x right parenthesis equals 5 x minus 8 h left parenthesis x right parenthesis equals fraction numerator 2 x minus 1 over denominator x plus 3 end fraction end style  Tentukan begin mathsize 14px style open parentheses h ring operator g close parentheses left parenthesis 4 right parenthesis end style undefined 

 

  1. begin mathsize 14px style... end style 

  2. undefined 

Jawaban:

Diketahui : 

begin mathsize 14px style g left parenthesis x right parenthesis equals 5 x minus 87 h left parenthesis x right parenthesis equals fraction numerator 2 x minus 1 over denominator x plus 3 end fraction end style 

 

Ditanya : 

begin mathsize 14px style left parenthesis h ring operator g right parenthesis left parenthesis 4 right parenthesis end style 

Jawab :

begin mathsize 14px style left parenthesis h ring operator g right parenthesis left parenthesis x right parenthesis equals h left parenthesis g left parenthesis x right parenthesis right parenthesis left parenthesis f ring operator g right parenthesis left parenthesis x right parenthesis equals h left parenthesis 5 x minus 8 right parenthesis left parenthesis f ring operator g right parenthesis left parenthesis x right parenthesis equals fraction numerator 2 left parenthesis 5 x minus 8 right parenthesis minus 1 over denominator left parenthesis 5 x minus 8 right parenthesis plus 3 end fraction left parenthesis f ring operator g right parenthesis left parenthesis x right parenthesis equals fraction numerator 10 x minus 16 minus 1 over denominator 5 x minus 8 plus 3 end fraction left parenthesis f ring operator g right parenthesis left parenthesis x right parenthesis equals fraction numerator 10 x minus 17 over denominator 5 x minus 5 end fraction end style 

begin mathsize 14px style left parenthesis h ring operator g right parenthesis left parenthesis 4 right parenthesis equals fraction numerator 10 x minus 17 over denominator 5 x minus 5 end fraction left parenthesis h ring operator g right parenthesis left parenthesis 4 right parenthesis equals fraction numerator 10 left parenthesis 4 right parenthesis minus 17 over denominator 5 left parenthesis 4 right parenthesis minus 5 end fraction left parenthesis h ring operator g right parenthesis left parenthesis 4 right parenthesis equals fraction numerator 40 minus 17 over denominator 20 minus 5 end fraction left parenthesis h ring operator g right parenthesis left parenthesis 4 right parenthesis equals 23 over 15 end style   

 

 

 

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