2024-06-27
arctanx的常用值
limx^2[arctanx-arctan(x a)],趋近无穷,好像要用拉格朗日,夹逼准则
lim arctanx-2x∧2/sin2x
x 20) dx arctan c ; x
x→-∞limy=x→-∞lim(arctanx-arccotx)=-π/2-π=-3π/2函数y=arc
> arctanx
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