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能解释一下那个公式怎么得出来的,是极坐标吗,画半天还是不懂,高人指点~~~~

Posted by madeinchina at 2006-02-03 23:36:45 on Problem 2666
In Reply To:不只三角没学好 。。。 10WA==1AC Posted by:ning at 2006-01-09 20:32:46


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