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初中数学＂隐藏技能＂:那些课本没讲,但考试必用的公式定理

2026-03-27 12:01:34

初中数学＂隐藏技能＂:那些课本没讲,但考试必用的公式定理

每次翻开数学试卷，看到压轴题就头大？明明课本上的公式都背熟了，可一到考试还是无从下手？

其实，初中数学有很多"隐形武器"——它们不会出现在教材正文里，却是学霸们解题时的秘密法宝。今天，我们就来盘点那些书本上没有，但却超级实用的公式定理，助你轻松拿下中考压轴题！

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CONNECT:[ UseTime:0.000371s ] mysql:host=127.0.0.1;port=3306;dbname=c_sjds;charset=utf8mb4
SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000526s ]
SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.005781s ]
SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000307s ]
SHOW FULL COLUMNS FROM `set` [ RunTime:0.000533s ]
SELECT * FROM `set` [ RunTime:0.000558s ]
SHOW FULL COLUMNS FROM `article` [ RunTime:0.000670s ]
SELECT * FROM `article` WHERE `id` = 464004 LIMIT 1 [ RunTime:0.004303s ]
UPDATE `article` SET `lasttime` = 1775573705 WHERE `id` = 464004 [ RunTime:0.004993s ]
SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000638s ]
SELECT * FROM `article` WHERE `id` < 464004 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000461s ]
SELECT * FROM `article` WHERE `id` > 464004 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000365s ]
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SELECT * FROM `article` WHERE `id` < 464004 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001523s ]
SELECT * FROM `article` WHERE `id` < 464004 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.005518s ]

0.110094s

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