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【单选题】
设 是 阶方阵且 ,则 的列向量中 ( )
A.
必有一个向量为零向量
B.
必有两个向量对应成比例
C.
必有一个向量是其余向量的线性组合
D.
任意一个向量是其余向量的线性组合
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【简答题】这最初的四分钟不是抱怨身体不佳或谈论自己在别人身上所发现的缺点的时候。(complain about)
【判断题】利用ode45()函数计算高阶微分方程的解时,必须先把高阶微分方程转化为一阶微分方程组的形式。
A.
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B.
错误
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A.
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B.
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C.
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D.
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A.
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B.
错误
【简答题】Translate the following into English. ● 这最初的四分钟不是抱怨身体不佳或自己在别人身上所发现的缺点的时候。( complain about )
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