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Suatu fungsi . Jika daerah asal . Daerah hasilnya ...

Suatu fungsi begin mathsize 14px style f open parentheses x close parentheses equals 3 x plus 2 end style. Jika daerah asal begin mathsize 14px style open curly brackets x vertical line minus 2 less or equal than x less or equal than 1 comma x element of text B end text close curly brackets end style. Daerah hasilnya adalah ....

  1. begin mathsize 14px style open curly brackets negative 3. negative 2 comma 1 comma 4 close curly brackets end style 

  2. begin mathsize 14px style open curly brackets negative 2. negative 1 comma 2 comma 3 close curly brackets end style 

  3. begin mathsize 14px style open curly brackets negative 1 comma 2 comma 5 comma 8 close curly brackets end style 

  4. begin mathsize 14px style open curly brackets negative 4 comma negative 1 comma 2 comma 5 close curly brackets end style 

Jawaban:

Diketahui suatu fungsi begin mathsize 14px style f open parentheses x close parentheses equals 3 x plus 2 end style. Jika daerah asal begin mathsize 14px style open curly brackets x vertical line minus 2 less or equal than x less or equal than 1 comma x element of text B end text close curly brackets end style, maka

  • Untuk x equals negative 2 diperoleh

table attributes columnalign right center left columnspacing 0px end attributes row cell f open parentheses negative 2 close parentheses end cell equals cell 3 open parentheses negative 2 close parentheses plus 2 end cell row blank equals cell negative 6 plus 2 end cell row blank equals cell negative 4 end cell end table 

  • Untuk x equals negative 1 diperoleh

table attributes columnalign right center left columnspacing 0px end attributes row cell f open parentheses negative 1 close parentheses end cell equals cell 3 open parentheses negative 1 close parentheses plus 2 end cell row blank equals cell negative 3 plus 2 end cell row blank equals cell negative 1 end cell end table 

  • Untuk x equals 0 diperoleh

table attributes columnalign right center left columnspacing 0px end attributes row cell f open parentheses 0 close parentheses end cell equals cell 3 open parentheses 0 close parentheses plus 2 end cell row blank equals cell 0 plus 2 end cell row blank equals 2 end table 

  • Untuk x equals 1 diperoleh

table attributes columnalign right center left columnspacing 0px end attributes row cell f open parentheses 1 close parentheses end cell equals cell 3 open parentheses 1 close parentheses plus 2 end cell row blank equals cell 3 plus 2 end cell row blank equals 5 end table

Jadi, daerah hasilnya adalah begin mathsize 14px style open curly brackets negative 4 comma negative 1 comma 2 comma 5 close curly brackets end style.

Jadi, jawaban yang tepat adalah D.
 

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