展开 (1,2,0)y(2,-1,10)

解答

展开

(1, 2, 0) y (2, - 1, 10)

2 (1 \cdot 2 \cdot 0,,) y, - 1 \cdot (1 \cdot 2 \cdot 0,,) y, 10

求解步骤

(1, 2, 0) y (2, - 1, 10)

= (1 \cdot 2 \cdot 0,,) (2, - 1 \cdot 10,) y

使用分配律:

a (b - c) = ab - a c

a = (1, 2, 0) y, b = 2,, c = 1, 10

= (1, 2, 0) y \cdot 2, - (1, 2, 0) y \cdot 1, 10

= 2 (1 \cdot 2 \cdot 0,,) y, - 1 \cdot (1 \cdot 2 \cdot 0,,) y, 10

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