Jika (f∘g)(x)=x2−4 dan g(x)=x+3 maka f(x)=...

Pertanyaan

Jika open parentheses f ring operator g close parentheses open parentheses x close parentheses equals x squared minus 4 dan g open parentheses x close parentheses equals x plus 3 maka f open parentheses x close parentheses equals...

  1. x squared minus 6 x plus 5

  2. x squared minus 6 x plus 13

  3. x squared plus 6 x plus 5

  4. x squared minus 1

  5. x squared minus 7

A. Acfreelance

Master Teacher

Jawaban terverifikasi

Pembahasan

Diketahui left parenthesis f ring operator g right parenthesis left parenthesis x right parenthesis equals x squared plus 4 dan g left parenthesis x right parenthesis equals x plus 3, maka:

table attributes columnalign right center left columnspacing 0px end attributes row cell left parenthesis f ring operator g right parenthesis left parenthesis x right parenthesis end cell equals cell f left parenthesis g left parenthesis x right parenthesis right parenthesis end cell row cell x squared plus 4 end cell equals cell f left parenthesis x plus 3 right parenthesis end cell row cell f left parenthesis x plus 3 right parenthesis end cell equals cell x squared plus 4 end cell row cell space misal space y end cell equals cell x plus 3 comma space maka space x equals y minus 3 end cell row cell f left parenthesis y minus 3 plus 3 right parenthesis end cell equals cell left parenthesis y minus 3 right parenthesis squared plus 4 f left parenthesis y right parenthesis equals y squared minus 6 y plus 9 plus 4 end cell row cell f left parenthesis y right parenthesis end cell equals cell y squared minus 6 y plus 13 end cell row cell f left parenthesis x right parenthesis end cell equals cell x squared minus 6 x plus 13 end cell end table 

jadi, jawaban yang tepat adalah B

430

3.8 (11 rating)

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