求两向量组(1,5,-1,4)和(-2,3,-2,4)的内积
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![求两向量组(1,5,-1,4)和(-2,3,-2,4)的内积](/uploads/image/z/10128626-26-6.jpg?t=%E6%B1%82%E4%B8%A4%E5%90%91%E9%87%8F%E7%BB%84%EF%BC%881%2C5%2C-1%2C4%EF%BC%89%E5%92%8C%EF%BC%88-2%2C3%2C-2%2C4%EF%BC%89%E7%9A%84%E5%86%85%E7%A7%AF)
求两向量组(1,5,-1,4)和(-2,3,-2,4)的内积
求两向量组(1,5,-1,4)和(-2,3,-2,4)的内积
求两向量组(1,5,-1,4)和(-2,3,-2,4)的内积
求两向量组(1,5,-1,4)和(-2,3,-2,4)的内积
=1×(-2)+5×3+(-1)×(-2)+4×4
=-2+15+2+16
=31;
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