lim(x→0) (1-cos(1-cosx))/(arctanx^2)^2求极限
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lim(x→0) (1-cos(1-cosx))/(arctanx^2)^2求极限
lim(x→0) (1-cos(1-cosx))/(arctanx^2)^2求极限
lim(x→0) (1-cos(1-cosx))/(arctanx^2)^2求极限
大哥,既然你自己都解出来了,分数就别浪费了
我有图片,分就给我吧,让人参考也好看点
X趋于0的等价无穷小替换
原始=(1-cos(x^2/2))/(x^2)^2=(x^4/8)/x^4=1/8
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