求lim e^(1/x^2)*arctan((x^2+2-1)/(x+1)*(x-2)) 当x趋近于0,-1,2的值

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求lime^(1/x^2)*arctan((x^2+2-1)/(x+1)*(x-2))当x趋近于0,-1,2的值求lime^(1/x^2)*arctan((x^2+2-1)/(x+1)*(x-2))当

求lim e^(1/x^2)*arctan((x^2+2-1)/(x+1)*(x-2)) 当x趋近于0,-1,2的值
求lim e^(1/x^2)*arctan((x^2+2-1)/(x+1)*(x-2)) 当x趋近于0,-1,2的值

求lim e^(1/x^2)*arctan((x^2+2-1)/(x+1)*(x-2)) 当x趋近于0,-1,2的值
是不是那儿错了 少了个X

lim arctan1/x 2; = arctan(+∞) = ½π± kπ (k= 0, 1, 2, 3, .) x→0 通常在主值范围内考虑,是½π. &frac