Roboguru

Diketahui fungsi . Hitunglah .

Diketahui fungsi begin mathsize 14px style R open parentheses x close parentheses equals 2 x squared minus x end style. Hitunglah begin mathsize 14px style R open parentheses 2 close parentheses plus 4 R open parentheses x close parentheses minus R open parentheses 2 x minus 1 close parentheses end style

Jawaban:

begin mathsize 14px style R open parentheses x close parentheses equals 2 x squared minus x end style 

Maka 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell R open parentheses 2 close parentheses end cell equals cell 2 open parentheses 2 close parentheses squared minus open parentheses 2 close parentheses end cell row blank equals cell 8 minus 2 end cell row blank equals 6 row cell R open parentheses 2 x minus 1 close parentheses end cell equals cell 2 open parentheses 2 x minus 1 close parentheses squared minus open parentheses 2 x minus 1 close parentheses end cell row blank equals cell 2 open parentheses 4 x squared minus 4 x plus 1 close parentheses minus open parentheses 2 x minus 1 close parentheses end cell row blank equals cell 8 x squared minus 8 x plus 2 minus 2 x plus 1 end cell row blank equals cell 8 x squared minus 10 x plus 3 end cell end table end style 

Sehingga nilai dari begin mathsize 14px style R open parentheses 2 close parentheses plus 4 R open parentheses x close parentheses minus R open parentheses 2 x minus 1 close parentheses end style sebagai berikut 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell R left parenthesis 2 right parenthesis plus 4 R left parenthesis x right parenthesis minus R left parenthesis 2 x minus 1 right parenthesis end cell equals cell 6 plus 4 open parentheses 2 x squared minus x close parentheses minus open parentheses 8 x squared minus 10 x plus 3 close parentheses end cell row blank equals cell 6 plus 8 x squared minus 4 x minus 8 x squared plus 80 x minus 3 end cell row blank equals cell 76 x plus 3 end cell end table end style 

Jadi begin mathsize 14px style R left parenthesis 2 right parenthesis plus 4 R left parenthesis x right parenthesis minus R left parenthesis 2 x minus 1 right parenthesis equals 76 x plus 3 end style

0

Ruangguru

RUANGGURU HQ

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

Coba GRATIS Aplikasi Ruangguru

Produk Ruangguru

Produk Lainnya

Hubungi Kami

Ikuti Kami

©2021 Ruangguru. All Rights Reserved