Got your "Say it the 3rd time, rec funcition is a step function.

Got your "Say it the 3rd time, rec funcition is a step function. Period." :)))

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Too bad, you can't read math -weston- 给 weston 发送悄悄话 weston 的博客首页 (0 bytes) () 03/07/2015 postreply 14:22:16

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