本实验先利用Mathematica求解非线性方程（组）,探索不动点、混沌的性质-In this study, the first use of Mathematica for solving nonlinear equations (group), explore the fixed point, chaotic nature of the
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001220s ]
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:0.106659s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001134s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003595s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000975s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014791s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001301s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 10447 [ RunTime:0.001501s ]
