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limcosx/½π-x(x→½π)的极限怎么求
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limcosx/½π-x (x→½π)的极限怎么求
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答案和解析
0/0型,直接用洛必达法则求导即可
limcosx/½π-x (x→½π)
=lim(-sinx)/(-1) (x→½π)
=lim(sinx) (x→½π)
=1
limcosx/½π-x (x→½π)
=lim(-sinx)/(-1) (x→½π)
=lim(sinx) (x→½π)
=1
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