设A=,B=,已知AX=B有解. (Ⅰ)求常数a,b. (Ⅱ)求X.

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问题 设A=,B=,已知AX=B有解.
(Ⅰ)求常数a,b.
(Ⅱ)求X.

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答案(Ⅰ)因为AX=B有解,所以r(A[*]B)=r(A), [*] (Ⅱ)令X=(X1,X2),B=(b1,b2), [*] [*]

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