Cun Zhang’s Blog

mnewton is an implementation of Newton’s method for solving nonlinear equations in one or more variables.

Function: mnewton (FuncList,VarList,GuessList)

(%i1) load("mnewton")$

(%i2) mnewton([x1+3*log(x1)-x2^2, 2*x1^2-x1*x2-5*x1+1],

[x1, x2], [5, 5]);

(%o2) [[x1 = 3.756834008012769, x2 = 2.779849592817897]]

(%i3) mnewton([2*a^a-5],[a],[1]);

(%o3)[[a = 1.70927556786144]]

(%i4) mnewton([2*3^u-v/u-5, u+2^v-4], [u, v], [2, 2]);

(%o4) [[u = 1.066618389595407, v = 1.552564766841786]]

wp-slimstat is a simple web stats analyser for wordpress.

in the version 0.9.2,it display wordpress database error:

WordPress database error: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ” at line 3]
SELECT `tp`.`post_title` FROM `wp_posts` AS `tp` WHERE (1 = 1) AND `tp`.`ID` =

I google this problem and find then answer at http://silverfox.name/archive/category/computer/network in Chinese.

I changed wp-slimstat.php as that article said,then it works fine.

at the line 1716 of wp-slimstat.php，the original code as follow:

modification:

The reason leading this error is:

This plugin will read WordPress’s Option “permalink_structure”，for example,my is “/archive/%post_id%”，so the Regular Expressions  is

matching the content of $resource,creating $myFieldsList. For exampl,"/archive/147”,

corresponding is :

so it needs $aFieldIndex -1 to choose the value of  myFieldsList 147. 

I install Slimstat(simple web stats analyser ) plugin for my wp.But I find it display this server time,not my local time.
I google and find the answer from http://www.deepjiveinterests.com/2006/08/07/how-to-get-wp-slimstat-to-recognize-your-local-timezone/.
I put a line of code (as follow) into wp-slimstat.php,then it works fine. Thanks for Deep Jive’s share.
I use Beijing time,so I need change timezone to “Asia/Shanghai’.Then the code is:
date_default_timezone_set (”Asia/Shanghai”);

So why can he find the answer?
I think he must find than Slimstat is writed by php,so we can find the answer from php.THIS IS THE KEY.This also can be used to solve any problem!

Thank for Deep Jive. ^_^

here is the original post link:
http://www.deepjiveinterests.com/2006/07/30/about/

This’s an interesting article from http://www.matrix67.com/blog/article.asp?id=456.

I use Maxima to re-plot that picture.

link:Chinese Version http://www.matrix67.com/blog/article.asp?id=456

English Version http://www.walkingrandomly.com/?p=19