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September 2021 1 3 Report

Помогите решить задания

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sangers1959

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1. a) a=(0;-22) a=(0;-22j)
    b) a=(8;-6;3)   a=(8i;-6j;3k)
2. a) a=(k;-4) b=(8;2) a⊥b      b) a=(-2;-3;5)   b=(4;p;-10)   a⊥b
        8k+(-4)*2=0                          (-2)*4+(-3)*p+5*(-10)=0
        8k-8=0                                   -8-3p-50=0
        8k=8                                       3p=-58
         k=1                                         p=-19¹/₃.
      c) a=(k;-4) b=(8;2) a||b            d) a=(-2;-3;5)   b=(4;p;-10)   a||b
          k/8=-4/2                                     -2/4=-3/p=5/(-10)
          2k=-32                                       -1/2=-3/p=-1/2
          k=-16                                         -3/p=-1/2
                                                              -p=(-3)*2
                                                              -p=-6
                                                               p=6.

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