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Fungsi  dan  dinyatakan oleh  dan . Bentuk fungsi ...

Fungsi undefined dan undefined dinyatakan oleh begin mathsize 14px style f left parenthesis x right parenthesis equals x squared plus x plus 1 end style dan begin mathsize 14px style g left parenthesis x right parenthesis equals 2 x minus 3 end style. Bentuk fungsi komposisi begin mathsize 14px style left parenthesis f ring operator g right parenthesis left parenthesis x right parenthesis end style adalah undefined 

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

  2. begin mathsize 14px style... end style 

Jawaban:

Diketahui:

begin mathsize 14px style f left parenthesis x right parenthesis equals x squared plus x plus 1 end style 

begin mathsize 14px style g left parenthesis x right parenthesis equals 2 x minus 3 end style

Ditanya :

begin mathsize 14px style left parenthesis f ring operator g right parenthesis left parenthesis x right parenthesis end style ?

Jawab :

begin mathsize 14px style open parentheses f ring operator g close parentheses open parentheses x close parentheses equals open parentheses f left parenthesis g left parenthesis x right parenthesis close parentheses open parentheses f ring operator g close parentheses open parentheses x close parentheses equals open parentheses f left parenthesis 2 x minus 3 right parenthesis close parentheses open parentheses f ring operator g close parentheses open parentheses x close parentheses equals open parentheses 2 x minus 3 close parentheses squared plus open parentheses 2 x minus 3 close parentheses plus 1 open parentheses f ring operator g close parentheses open parentheses x close parentheses equals open parentheses 4 x squared minus 6 x minus 6 x plus 9 close parentheses plus open parentheses 2 x minus 3 close parentheses plus 1 open parentheses f ring operator g close parentheses open parentheses x close parentheses equals 4 x squared minus 6 x minus 6 x plus 9 plus 2 x minus 3 plus 1 open parentheses f ring operator g close parentheses open parentheses x close parentheses equals 4 x squared minus 10 x plus 7 end style 

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