Cevaplar

2013-01-13T13:30:00+02:00

AB=B-A=B(-1,-3)-A(-2,4)=-1+2,-3-4=1,-7

CB=B-C=B(-1,-3)-C(2,6)=-1-2,-3-6=-3,-9     İÇ ÇARPIM <(1,-7),(-3,-9)>=  1*(-3)+(-7)*(-9)=-3+63=60

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