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Pertanyaan

Diketahui begin mathsize 14px style a with rightwards harpoon with barb upwards on top equals 3 i plus 2 j end style, begin mathsize 14px style b with rightwards harpoon with barb upwards on top equals negative 2 i plus 3 j end style maka begin mathsize 14px style 3 a with rightwards harpoon with barb upwards on top minus 2 b with rightwards harpoon with barb upwards on top equals... end style

  1. begin mathsize 14px style 13 j plus 12 j end style

  2. begin mathsize 14px style 12 j end style

  3. begin mathsize 14px style 13 i minus 12 j end style

  4. begin mathsize 14px style 12 i plus 13 j end style

  5. begin mathsize 14px style 13 i end style

M. Nasrullah

Master Teacher

Mahasiswa/Alumni Universitas Negeri Makassar

Jawaban terverifikasi

Jawaban

jawaban yang tepat adalah E

Pembahasan

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 3 a with rightwards harpoon with barb upwards on top minus 2 b with rightwards harpoon with barb upwards on top end cell equals cell 3 open parentheses 3 i plus 2 j close parentheses minus 2 open parentheses negative 2 i plus 3 j close parentheses end cell row cell 3 a with rightwards harpoon with barb upwards on top minus 2 b with rightwards harpoon with barb upwards on top end cell equals cell 9 i plus 6 j plus 4 i minus 6 j end cell row cell 3 a with rightwards harpoon with barb upwards on top minus 2 b with rightwards harpoon with barb upwards on top end cell equals cell 13 i end cell end table end style

Jadi, jawaban yang tepat adalah E

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Diketahui titik A(2,−1), B(7,4), dan C(−1,3). Jika vektor a=AB, b=BC, dan c=2a−b, vektor c adalah ....

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