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Multiple choice:Solution of linear equations by column principal component elimination method

Luz3年前 (2021-05-10)题库240
Solution of linear equations by column principal component elimination method
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For the first elimination, select the principal element as(). The answer is a with a score of 2@[ A](2)
A. -4
B. 3
C. 4
D. 9




A.-4
B.3
C.4
D.9


answer:A

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