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Pertanyaan

Diketahui begin mathsize 14px style p with rightwards arrow on top equals open parentheses table row 2 row 3 row 6 end table close parentheses comma space q with rightwards arrow on top equals open parentheses table row 1 row cell 2 x end cell row 2 end table close parentheses end style, dan proyeksi skalar vektor begin mathsize 14px style space q with rightwards arrow on top end style pada begin mathsize 14px style p with rightwards arrow on top end style adalah begin mathsize 14px style 1 1 over 7 end style. Nilai x = ....

  1. -2

  2. -1

  3. 0

  4. 1

  5. 2

S. Intan

Master Teacher

Mahasiswa/Alumni Institut Pertanian Bogor

Jawaban terverifikasi

Pembahasan

begin mathsize 14px style Jika space straight c with rightwards arrow on top space merupakan space proyeksi space straight q with rightwards arrow on top space pada space space straight p with rightwards arrow on top space maka  open vertical bar straight c with rightwards arrow on top close vertical bar equals fraction numerator straight p with rightwards arrow on top straight space. straight space straight q with rightwards arrow on top over denominator open vertical bar straight p with rightwards arrow on top close vertical bar end fraction  8 over 7 equals fraction numerator open parentheses table row 2 row 3 row 6 end table close parentheses. open parentheses table row 1 row cell 2 straight x end cell row 2 end table close parentheses over denominator square root of 2 squared plus 3 squared plus 6 squared end root end fraction  8 over 7 equals fraction numerator 2 open parentheses 1 close parentheses plus 3 open parentheses 2 straight x close parentheses plus 6 open parentheses 2 close parentheses over denominator square root of 49 end fraction    Maka  8 equals 2 plus 6 straight x plus 12  6 straight x equals 8 minus 2 minus 12  6 straight x equals negative 6  straight x equals negative 1 end style

74

5.0 (3 rating)

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Diketahui vektor a=6i−2j​+3k dan b=4i+4j​−2k. tentukan: b. proyeksi skalar vektor b pada arah vektor a

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