lim(x趋于0)(x^2*e ^(1/ x^2))
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lim(x趋于0)(x^2*e^(1/x^2))lim(x趋于0)(x^2*e^(1/x^2))lim(x趋于0)(x^2*e^(1/x^2))lim(x趋于0)x^2*e^(1/x^2)=lim(x
lim(x趋于0)(x^2*e ^(1/ x^2))
lim(x趋于0)(x^2*e ^(1/ x^2))
lim(x趋于0)(x^2*e ^(1/ x^2))
lim(x趋于0) x^2 * e^(1/x^2)
=lim(x趋于0) e^(1/x^2) / (1/x^2) x趋于0的时候,分子分母都趋于0,用洛必达法则同时求导
=lim(x趋于0) e^(1/x^2) *(1/x^2)' / (1/x^2)'
=lim(x趋于0) e^(1/x^2)
那么很显然x趋于0时,1/x^2趋于正无穷,所以e^(1/x^2)趋于正无穷,
即原极限趋于正无穷
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