Roboguru

Diketahui  dengan  a.   dan .       Tentukan rumu...

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

a.  begin mathsize 14px style f open parentheses x close parentheses equals 2 x plus 1 end style dan begin mathsize 14px style g open parentheses x close parentheses equals 4 x squared plus x minus 10 end style
     Tentukan rumus begin mathsize 14px style left parenthesis f ring operator g right parenthesis left parenthesis x right parenthesis end style dan begin mathsize 14px style left parenthesis f ring operator g right parenthesis left parenthesis 1 right parenthesis end style 

Jawaban:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell open parentheses f ring operator g close parentheses open parentheses x close parentheses end cell equals cell f open parentheses g open parentheses x close parentheses close parentheses end cell row blank equals cell f open parentheses 4 x squared plus x minus 10 close parentheses end cell row blank equals cell 2 open parentheses 4 x squared plus x minus 10 close parentheses plus 1 end cell row blank equals cell 8 x squared plus 2 x minus 20 plus 1 end cell row blank equals cell 8 x squared plus 2 x minus 19 end cell end table end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell open parentheses f ring operator g close parentheses open parentheses 1 close parentheses end cell equals cell 8 times 1 squared plus 2 times 1 minus 19 end cell row blank equals cell 8 plus 2 minus 19 end cell row blank equals cell negative 9 end cell end table end style     

Jadi, rumus undefined 

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