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Pertanyaan

Perhatikan gambar berikut ini Diketahui titik C merupakan titik tengah OB. Jika O A = u , A B = v , dan AC diperpanjang hingga D dengan AC : CD = 4 : 1, maka B D = ...

Perhatikan gambar berikut ini

Diketahui titik C merupakan titik tengah OB.

Jika , , dan AC diperpanjang hingga D dengan AC : CD = 4 : 1, maka ...

  1. begin mathsize 14px style 5 over 8 u with rightwards arrow on top plus 3 over 8 v with rightwards arrow on top end style

  2. begin mathsize 14px style negative 5 over 8 u with rightwards arrow on top minus 3 over 8 v with rightwards arrow on top end style

  3. begin mathsize 14px style u with rightwards arrow on top plus v with rightwards arrow on top end style

  4. begin mathsize 14px style negative 3 over 8 u with rightwards arrow on top minus 5 over 8 v with rightwards arrow on top end style

  5. begin mathsize 14px style 3 over 8 u with rightwards arrow on top plus 5 over 8 v with rightwards arrow on top end style

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S. Difhayanti

Master Teacher

Mahasiswa/Alumni Universitas Muhammadiyah Prof. Dr. Hamka

Jawaban terverifikasi

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Pembahasan

Perhatikan bahwa Karena C berada di pertengahan OB, maka Kemudian A, C, dan D terletak segaris. Karena AC : CD = 4 : 1, maka Sehingga

Perhatikan bahwa

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell stack O B with rightwards arrow on top end cell equals cell stack O A with rightwards arrow on top plus stack A B with rightwards arrow on top end cell row blank equals cell u with rightwards arrow on top plus v with rightwards arrow on top end cell end table end style

Karena C berada di pertengahan OB, maka

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell stack O C with rightwards arrow on top end cell equals cell 1 half stack O B with rightwards arrow on top end cell row blank equals cell 1 half open parentheses u with rightwards arrow on top plus v with rightwards arrow on top close parentheses end cell end table end style

Kemudian A, C, dan D terletak segaris. Karena AC : CD = 4 : 1, maka

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell stack O C with rightwards arrow on top end cell equals cell fraction numerator 4 stack O D with rightwards arrow on top plus stack O A with rightwards arrow on top over denominator 4 plus 1 end fraction end cell row cell 1 half open parentheses u with rightwards arrow on top plus v with rightwards arrow on top close parentheses end cell equals cell fraction numerator 4 stack O D with rightwards arrow on top plus u with rightwards arrow on top over denominator 5 end fraction end cell row cell 5 over 2 open parentheses u with rightwards arrow on top plus v with rightwards arrow on top close parentheses end cell equals cell 4 stack O D with rightwards arrow on top plus u with rightwards arrow on top end cell row cell 5 over 2 u with rightwards arrow on top plus 5 over 2 v with rightwards arrow on top end cell equals cell 4 stack O D with rightwards arrow on top plus u with rightwards arrow on top end cell row cell 5 over 2 u with rightwards arrow on top plus 5 over 2 v with rightwards arrow on top minus u with rightwards arrow on top end cell equals cell 4 stack O D with rightwards arrow on top end cell row cell 3 over 2 u with rightwards arrow on top plus 5 over 2 v with rightwards arrow on top end cell equals cell 4 stack O D with rightwards arrow on top end cell row cell 1 half open parentheses 3 u with rightwards arrow on top plus 5 v with rightwards arrow on top close parentheses end cell equals cell 4 stack O D with rightwards arrow on top end cell row cell stack O D with rightwards arrow on top end cell equals cell 1 fourth times 1 half open parentheses 3 u with rightwards arrow on top plus 5 v with rightwards arrow on top close parentheses end cell row cell stack O D with rightwards arrow on top end cell equals cell 1 over 8 open parentheses 3 u with rightwards arrow on top plus 5 v with rightwards arrow on top close parentheses end cell end table end style

Sehingga

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell stack B D with rightwards arrow on top end cell equals cell stack B O with rightwards arrow on top plus stack O D with rightwards arrow on top equals negative stack O B with rightwards arrow on top plus stack O D with rightwards arrow on top end cell row blank equals cell negative open parentheses u with rightwards arrow on top plus v with rightwards arrow on top close parentheses plus 1 over 8 open parentheses 3 u with rightwards arrow on top plus 5 v with rightwards arrow on top close parentheses end cell row blank equals cell negative u with rightwards arrow on top minus v with rightwards arrow on top plus 3 over 8 u with rightwards arrow on top plus 5 over 8 v with rightwards arrow on top end cell row blank equals cell negative 5 over 8 u with rightwards arrow on top minus 3 over 8 v with rightwards arrow on top end cell end table end style

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Perhatikan gambar berikut Diketahui O A = 3 p ​ dan OB = 6 q ​ . Titik C merupakan titik tengah OB dan titik D berada pada AB sedemikian sehingga BD = 2DA. Maka OE = ...

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