Iklan

Pertanyaan

Jika f ( x ) = 3 x − 1 a x + 1 ​ , x  = 3 1 ​ , g ( x ) = x − 2 dan ( g − 1 ∘ f − 1 ) ( 2 ) = 2 7 ​ , hitunglah nilai a .

Jika  dan , hitunglah nilai 

Ikuti Tryout SNBT & Menangkan E-Wallet 100rb

Habis dalam

02

:

22

:

48

:

04

Klaim

Iklan

L. Rante

Master Teacher

Mahasiswa/Alumni Universitas Negeri Makassar

Jawaban terverifikasi

Jawaban

nilai yang memenuhi adalah .

nilai begin mathsize 14px style straight a end style yang memenuhi adalah begin mathsize 14px style straight a equals 4 end style

Pembahasan

Berdasarkan sifat invers fungsi komposisi maka artinya . Berdasarakan defenisi invers fungsimaka artinya . Sehingga Jadi nilai yang memenuhi adalah .

Berdasarkan sifat invers fungsi komposisi maka begin mathsize 14px style open parentheses g to the power of negative 1 end exponent ring operator f to the power of negative 1 end exponent close parentheses open parentheses 2 close parentheses equals 7 over 2 end style artinya begin mathsize 14px style open parentheses f ring operator g close parentheses to the power of negative 1 end exponent open parentheses 2 close parentheses equals 7 over 2 end style

Berdasarakan defenisi invers fungsi maka begin mathsize 14px style open parentheses f ring operator g close parentheses to the power of negative 1 end exponent open parentheses 2 close parentheses equals 7 over 2 end style artinya begin mathsize 14px style open parentheses f ring operator g close parentheses open parentheses 7 over 2 close parentheses equals 2 end style. Sehingga 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell g open parentheses x close parentheses end cell equals cell x minus 2 end cell row cell g open parentheses 7 over 2 close parentheses end cell equals cell 7 over 2 minus 2 end cell row cell g open parentheses 7 over 2 close parentheses end cell equals cell 3 over 2 end cell row blank blank blank row cell open parentheses f ring operator g close parentheses open parentheses 7 over 2 close parentheses end cell equals cell f open parentheses g open parentheses 7 over 2 close parentheses close parentheses end cell row 2 equals cell f open parentheses 3 over 2 close parentheses end cell row 2 equals cell fraction numerator straight a begin display style 3 over 2 end style plus 1 over denominator 3 open parentheses begin display style 3 over 2 end style close parentheses minus 1 end fraction end cell row 2 equals cell fraction numerator begin display style fraction numerator 3 straight a plus 2 over denominator 2 end fraction end style over denominator begin display style 9 over 2 end style minus 1 end fraction end cell row 2 equals cell fraction numerator begin display style fraction numerator 3 straight a plus 2 over denominator 2 end fraction end style over denominator begin display style 7 over 2 end style end fraction end cell row 2 equals cell fraction numerator 3 straight a plus 2 over denominator 7 end fraction end cell row cell 3 straight a plus 2 end cell equals 14 row cell 3 straight a end cell equals 12 row straight a equals cell 12 over 3 end cell row straight a equals 4 end table end style 

Jadi nilai begin mathsize 14px style straight a end style yang memenuhi adalah begin mathsize 14px style straight a equals 4 end style

Perdalam pemahamanmu bersama Master Teacher
di sesi Live Teaching, GRATIS!

2

Mahrin Ayla Rizwana

kurang paham

Iklan

Pertanyaan serupa

Jika f ( x ) = 2 1 ​ x + 4 dan g ( x ) = 3 x − 7 , hitunglah ( g − 1 ∘ f − 1 ) ( − 2 ) − ( f − 1 ∘ g − 1 ) ( − 2 ) .

1

4.0

Jawaban terverifikasi

RUANGGURU HQ

Jl. Dr. Saharjo No.161, Manggarai Selatan, Tebet, Kota Jakarta Selatan, Daerah Khusus Ibukota Jakarta 12860

Coba GRATIS Aplikasi Roboguru

Coba GRATIS Aplikasi Ruangguru

Download di Google PlayDownload di AppstoreDownload di App Gallery

Produk Ruangguru

Hubungi Kami

Ruangguru WhatsApp

+62 815-7441-0000

Email info@ruangguru.com

[email protected]

Contact 02140008000

02140008000

Ikuti Kami

©2024 Ruangguru. All Rights Reserved PT. Ruang Raya Indonesia