csharp版常见数值计算源码，包括矩阵计算、插值、线性方程和非线性方程等-CSharp version of common-source numerical computation, including the matrix calculation, interpolation, linear equations and nonlinear equations, such as
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001637s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.113234s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001184s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001213s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003714s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001094s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003409s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015817s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001532s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 315712 [ RunTime:0.001464s ]
