Diketahui vektor p​=⎝⎛​−823​⎠⎞​ dan q​=⎝⎛​−13−4​⎠⎞​ dan r=p​+q​. Tentukan vektor r.

Pertanyaan

Diketahui vektor begin mathsize 14px style straight p with rightwards arrow on top equals open parentheses table row cell negative 8 end cell row 2 row 3 end table close parentheses end style dan begin mathsize 14px style straight q with rightwards arrow on top equals open parentheses table row cell negative 1 end cell row 3 row cell negative 4 end cell end table close parentheses end style dan begin mathsize 14px style straight r with rightwards arrow on top equals straight p with rightwards arrow on top plus straight q with rightwards arrow on top end style. Tentukan vektor begin mathsize 14px style straight r with rightwards arrow on top end style.

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R. Azizatul

Master Teacher

Mahasiswa/Alumni Universitas Negeri Semarang

Jawaban terverifikasi

Jawaban

 vektor begin mathsize 14px style straight r with rightwards arrow on top end style adalah begin mathsize 14px style open parentheses table row cell negative 9 end cell row 5 row cell negative 1 end cell end table close parentheses end style

Pembahasan

begin mathsize 14px style straight r with rightwards arrow on top equals straight p with rightwards arrow on top plus straight q with rightwards arrow on top straight r with rightwards arrow on top equals open parentheses table row cell negative 8 end cell row 2 row 3 end table close parentheses plus open parentheses table row cell negative 1 end cell row 3 row cell negative 4 end cell end table close parentheses straight r with rightwards arrow on top equals open parentheses table row cell negative 9 end cell row 5 row cell negative 1 end cell end table close parentheses end style

Jadi, vektor begin mathsize 14px style straight r with rightwards arrow on top end style adalah begin mathsize 14px style open parentheses table row cell negative 9 end cell row 5 row cell negative 1 end cell end table close parentheses end style

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Pada jajargenjang PQRS dengan titik tengah O diketahui PQ​=u dan PS=v. Nyatakan vektor dan hasil operasi vektor berikut dalam u dan v. c.  QR​+PR

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