lim(x-1)tanπx/2

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lim(x→1) (1-x)tan(π/2)x

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lim(x→1)(x-1)tanπx/2=?请不要用洛必达法则.

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一道关于用洛必达法则求极限的题求lim(x->π)(π-x)tan(x/2)这道题我死活求出来都是一无穷大~我的具体步骤是:lim(x->π)(π-x)tan(x/2)=lim(x->π)tan(x/

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