展开 r(2,2,-1)*s(1,-2,3)

解答

展开

r (2, 2, - 1) \cdot s (1, - 2, 3)

2 rs, 2, 1, - 2 rs, 2, 2, 3 - 1 \cdot 1 \cdot rs, 1 \cdot 2, 3

求解步骤

r (2, 2, - 1) s (1, - 2, 3)

= (2 \cdot 2,, - 1) (1, - 2 \cdot 3,) rs

乘开

(2, 2, - 1) (1, - 2, 3) : 2, 2, 1, - 2, 2, 2, 3 - 1 \cdot 1, 1 \cdot 2, 3

= rs (2, 2, 1, - 2, 2, 2, 3 - 1 \cdot 1, 1 \cdot 2, 3)

乘开

rs (2, 2, 1, - 2, 2, 2, 3 - 1 \cdot 1, 1 \cdot 2, 3) : 2 rs, 2, 1, - 2 rs, 2, 2, 3 - 1 \cdot 1 \cdot rs, 1 \cdot 2, 3

= 2 rs, 2, 1, - 2 rs, 2, 2, 3 - 1 \cdot 1 \cdot rs, 1 \cdot 2, 3

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