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回复 realnumber 直接积分就ok。我不会什么$什么的打法,直接打了。 xf(x)=xlnx-x+c,f(x)=lnx-1+c ... yfgkey 发表于 2017-4-23 12:23
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$\LaTeX$ formula tutorial Reply post To last page
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2025-7-15 14:28 GMT+8
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