求微积分极限 lim(x->0+)sin(arctan1/x) 和 lim(x->π/4)【(cos2x)的立方】
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求微积分极限 lim(x->0+)sin(arctan1/x) 和 lim(x->π/4)【(cos2x)的立方】
![求微积分极限 lim(x->0+)sin(arctan1/x) 和 lim(x->π/4)【(cos2x)的立方】](/uploads/image/z/19518894-54-4.jpg?t=%E6%B1%82%E5%BE%AE%E7%A7%AF%E5%88%86%E6%9E%81%E9%99%90+lim%28x-%3E0%2B%29sin%28arctan1%2Fx%29+%E5%92%8C+lim%28x-%3E%CF%80%2F4%29%E3%80%90%EF%BC%88cos2x%EF%BC%89%E7%9A%84%E7%AB%8B%E6%96%B9%E3%80%91)
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