Roboguru

Diketahui dengan c. . Tentukan rumus dan .

Diketahui begin mathsize 14px style f colon R rightwards arrow R space dan space g colon R rightwards arrow R end style dengan

c.   begin mathsize 14px style f open parentheses x close parentheses equals 2 x minus 1 space dan space open parentheses f ring operator g close parentheses open parentheses x close parentheses equals 4 x squared plus 6 x plus 3 end style.
      Tentukan rumus begin mathsize 14px style g open parentheses x close parentheses end style dan begin mathsize 14px style g open parentheses 2 close parentheses end style.

Jawaban:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell space f open parentheses g open parentheses x close parentheses close parentheses end cell equals cell left parenthesis f ring operator g right parenthesis left parenthesis x right parenthesis end cell row cell 2 times g left parenthesis x right parenthesis minus 1 end cell equals cell 4 x squared plus 6 x plus 3 end cell row cell 2 times g left parenthesis x right parenthesis end cell equals cell 4 x squared plus 6 x plus 3 plus 1 end cell row cell 2 times g left parenthesis x right parenthesis end cell equals cell 4 x squared plus 6 x plus 4 end cell row cell g open parentheses x close parentheses end cell equals cell 1 half open parentheses 4 x squared plus 6 x plus 4 close parentheses end cell row cell g left parenthesis x right parenthesis end cell equals cell 2 x squared plus 3 x plus 2 end cell row blank blank blank end table end style  
 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell g left parenthesis 2 right parenthesis end cell equals cell 2 times left parenthesis 2 right parenthesis squared plus 3 times left parenthesis 2 right parenthesis plus 2 end cell row blank equals cell 8 plus 6 plus 2 end cell row blank equals 16 end table end style 
 

Jadi, begin mathsize 14px style g open parentheses x close parentheses equals 2 x squared plus 3 x plus 2 space dan space g open parentheses 2 close parentheses equals 16 end style 

 

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