列主元消去法的步骤中，计算的消元因子
满足()
A: ≥1
B: =2
C: =0
D: ≤1
满足()A: ≥1
B: =2
C: =0
D: ≤1
举一反三
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- <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202106/5d5e445f772b4d8e90f7140053f2c0c6.png" />3、用全主元高斯消去法解方程组第一步所选的主元是（ ）。 A: -1. B: 6； C: 1； D: 2；
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- 理想低通滤波器的传输函数<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/980b5b2a8d7044b697bc516003ea3acb.png" >是()。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/9a82e2e4ff27470da538512097ee6438.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/c079877bd52d471db3cd6e163f62adbb.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/52aa9898f12641d797c40e4d118bd733.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202002/a7815d7407f34172aeef470a6adc5f47.png" >