Iklan

Iklan

Pertanyaan

Diberikan matriks P = ( p p ​ − p p ​ ) . Himpunan nilai yang memenuhi hubungan P − 1 = P T adalah ...

Diberikan matriks . Himpunan nilai p yang memenuhi hubungan  adalah ...

  1. open curly brackets 1 half comma space minus 1 half close curly brackets

  2. open curly brackets 1 comma space 1 close curly brackets

  3. open curly brackets 1 fifth square root of 2 comma space minus 1 fourth square root of 2 close curly brackets

  4. open curly brackets 1 half square root of 2 comma space minus 1 half square root of 2 close curly brackets

  5. open curly brackets square root of 2 comma space minus square root of 2 close curly brackets

Iklan

S. Ayu

Master Teacher

Mahasiswa/Alumni Universitas Muhammadiyah Prof. DR. Hamka

Jawaban terverifikasi

Jawaban

jawaban yang benar adalah D.

jawaban yang benar adalah D.

Iklan

Pembahasan

Rumus invers matriks yaitu: Rumus transpose matriks yaitu: Diperoleh penyelesaiannya yaitu: Perhatikan pada perhitungan matriks terdapat persamaan-persamaan. Jika diambil persamaan , diperoleh: Maka, nilai yaitu: atau Himpunan nilai yang memenuhi hubungan adalah . Oleh karena itu, jawaban yang benar adalah D.

Rumus invers matriks 2 cross times 2 yaitu:

table attributes columnalign right center left columnspacing 0px end attributes row A equals cell open parentheses table row a b row c d end table close parentheses end cell row cell A to the power of negative 1 end exponent end cell equals cell fraction numerator 1 over denominator a times d minus b times c end fraction open parentheses table row d cell negative b end cell row cell negative c end cell a end table close parentheses end cell end table

Rumus transpose matriks 2 cross times 2 yaitu:

table attributes columnalign right center left columnspacing 0px end attributes row A equals cell open parentheses table row a b row c d end table close parentheses end cell row cell A to the power of T end cell equals cell open parentheses table row a c row b d end table close parentheses end cell end table

Diperoleh penyelesaiannya yaitu:

table attributes columnalign right center left columnspacing 0px end attributes row cell P to the power of negative 1 end exponent end cell equals cell P to the power of T end cell row cell open parentheses table row p cell negative p end cell row p p end table close parentheses to the power of negative 1 end exponent end cell equals cell open parentheses table row p cell negative p end cell row p p end table close parentheses to the power of T end cell row cell fraction numerator 1 over denominator p open parentheses p close parentheses minus open parentheses negative p close parentheses open parentheses p close parentheses end fraction open parentheses table row p p row cell negative p end cell p end table close parentheses end cell equals cell open parentheses table row p p row cell negative p end cell p end table close parentheses end cell row cell fraction numerator 1 over denominator p squared plus p squared end fraction open parentheses table row p p row cell negative p end cell p end table close parentheses end cell equals cell open parentheses table row p p row cell negative p end cell p end table close parentheses end cell row cell fraction numerator 1 over denominator 2 p squared end fraction open parentheses table row p p row cell negative p end cell p end table close parentheses end cell equals cell open parentheses table row p p row cell negative p end cell p end table close parentheses end cell row cell open parentheses table row cell fraction numerator p over denominator 2 p squared end fraction end cell cell fraction numerator p over denominator 2 p squared end fraction end cell row cell fraction numerator negative p over denominator 2 p squared end fraction end cell cell fraction numerator p over denominator 2 p squared end fraction end cell end table close parentheses end cell equals cell open parentheses table row p p row cell negative p end cell p end table close parentheses end cell row cell open parentheses table row cell fraction numerator 1 over denominator 2 p end fraction end cell cell fraction numerator 1 over denominator 2 p end fraction end cell row cell fraction numerator negative 1 over denominator 2 p end fraction end cell cell fraction numerator 1 over denominator 2 p end fraction end cell end table close parentheses end cell equals cell open parentheses table row p p row cell negative p end cell p end table close parentheses end cell end table

Perhatikan pada perhitungan matriks terdapat persamaan-persamaan.

Jika diambil persamaan fraction numerator 1 over denominator 2 p end fraction equals p, diperoleh:

table attributes columnalign right center left columnspacing 0px end attributes row cell fraction numerator 1 over denominator 2 p end fraction end cell equals p row cell 2 p open parentheses p close parentheses end cell equals 1 row cell 2 p squared end cell equals 1 row cell p squared end cell equals cell 1 half end cell row p equals cell plus-or-minus square root of 1 half end root end cell row p equals cell plus-or-minus fraction numerator square root of 1 over denominator square root of 2 end fraction cross times fraction numerator square root of 2 over denominator square root of 2 end fraction end cell row p equals cell plus-or-minus 1 half square root of 2 end cell end table

Maka, nilai p yaitu:

p equals 1 half square root of 2  atau p equals negative 1 half square root of 2

Himpunan nilai p yang memenuhi hubungan P to the power of negative 1 end exponent equals P to the power of T adalah open curly brackets 1 half square root of 2 comma space minus 1 half square root of 2 close curly brackets.

Oleh karena itu, jawaban yang benar adalah D.

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

3

Iklan

Iklan

Pertanyaan serupa

Misal A = ( 4 3 ​ 7 5 ​ ) dan A T menyatakan transpos A , A − 1 menyatakan invers , ∣ A ∣ menyatakan determinan . Jika ∣ ∣ ​ A T ∣ ∣ ​ = k ∣ ∣ ​ A − 1 ∣ ∣ ​ maka k = ...

3

1.0

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