一个可以进行符号运算的工具,能支持用户自定义编程,进行求导,微分等运算-a symbolic computation can be a tool to support user-defined programming, derivative, differential, etc. Operational
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002330s ]
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SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001883s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002363s ]
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