you can write down the anser directly, if you have finished calculus 101

you can write down the anser directly, if you have finished calculus 101

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送交者: 008 于 2007-09-08, 03:33:08:

回答: put it in this simple way 由 cornbug 于 2007-09-08, 02:16:29:

wave dynamics is 10^6 more difficult than this one.