Description: Out the main elements of elimination is to control the rounding error and put forward an algorithm, the Gauss elimination process of elimination, if the emergence of a = 0, then the elimination is not possible, even if it is not 0, but small it as the divisor, it will lead to other elements of the order of the tremendous growth and proliferation of rounding errors, the final result is not reliable results using the main elements of the column elimination method, has been able to control the impact of rounding errors, and the election Main elements more convenient.
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列主元消去法.cpp
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