求极限Y=lim (xy+1)/x^4+y^4,当(x,y)→(0,0),
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求极限Y=lim (xy+1)/x^4+y^4,当(x,y)→(0,0),
求极限Y=lim (xy+1)/x^4+y^4,当(x,y)→(0,0),
求极限Y=lim (xy+1)/x^4+y^4,当(x,y)→(0,0),
lim xy+1=1
lim x^4+y^4,=0
所以lim (xy+1)/x^4+y^4=1/0=∞
明显是无穷
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跪求极限Y=lim (xy+1)/x^4+y^4,当(x,y)→(0,0),
求极限Y=lim (xy+1)/x^4+y^4,当(x,y)→(0,0),
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