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Jika (f+g)(x)=x2+3x dan g(x)=x2−5x+2. Tentukan Fungsi f(x)!

Pertanyaan

Jika begin mathsize 14px style left parenthesis f plus g right parenthesis left parenthesis x right parenthesis equals x squared plus 3 x end style dan begin mathsize 14px style g left parenthesis x right parenthesis equals x squared minus 5 x plus 2 end style. Tentukan Fungsi begin mathsize 14px style f left parenthesis x right parenthesis end style!

I. Sutiawan

Master Teacher

Mahasiswa/Alumni Universitas Pasundan

Jawaban terverifikasi

Pembahasan

Diketahui begin mathsize 14px style left parenthesis f plus g right parenthesis left parenthesis x right parenthesis equals x squared plus 3 x end style dan begin mathsize 14px style g left parenthesis x right parenthesis equals x squared minus 5 x plus 2 end style, maka:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell left parenthesis f plus g right parenthesis left parenthesis x right parenthesis end cell equals cell f left parenthesis x right parenthesis plus g left parenthesis x right parenthesis end cell row cell x squared plus 3 x end cell equals cell f left parenthesis x right parenthesis plus x squared minus 5 x plus 2 end cell row cell x squared plus 3 x minus x squared plus 5 x minus 2 end cell equals cell f left parenthesis x right parenthesis end cell row cell 8 x minus 2 end cell equals cell f left parenthesis x right parenthesis end cell row cell f left parenthesis x right parenthesis end cell equals cell 8 x minus 2 end cell end table end style 

43

5.0 (3 rating)

Nurul Hidayah

Pembahasan lengkap banget

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