求极限lim(x趋向于正无穷)arccos(1-x)/(1+x)

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求极限lim(x趋向于正无穷)arccos(1-x)/(1+x)求极限lim(x趋向于正无穷)arccos(1-x)/(1+x)求极限lim(x趋向于正无穷)arccos(1-x)/(1+x)等于圆周

求极限lim(x趋向于正无穷)arccos(1-x)/(1+x)
求极限lim(x趋向于正无穷)arccos(1-x)/(1+x)

求极限lim(x趋向于正无穷)arccos(1-x)/(1+x)
等于圆周率pai

lim(x趋向于正无穷)arccos(1-x)/(1+x)=limarccos[(1/x-1)/(1+1/x)]
=limarccos(-1)=π