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What's the difference between unicode and utf8? What's the difference between unicode and utf8? up vote 103 down vote favorite 49 49 Is it true that u 阅读全文
摘要:
条件数 Posted on 07/01/2010 by ccjou 本文的阅读等级:高级 当一线性系统受到极微小的扰动即可引发方程解剧烈变化时,我们将无从信任计算结果,便称它是病态系统(见“ 病态系统 ”)。 条件数(condition number) 是矩阵运算误差分析的基本工具,它可以度量矩阵对 阅读全文