讨论极限lim(x→0 y→0) [(X^2)y]/[(x^4)+(y^2)]:
二元函数求极限:lim sin(x^2+y)/(x^2+y^2) x→0,y→0
二元函数求极限:lim (sin(x^2+y)) / (x^2+y^2) x→0,y→0
lim(x,y)→(0,0) (x^2)y/(2x-y)的极限存不存在
lim(x→0y→1)(1+xe^y)^(2y+x/x)求极限
求两道多元函数的极限lim=(x²-y²-2x+2y)/(x+ y-2) ① (x,y)→(2,0)
求极限lim(y-x)x/根号下(x^2+y^2) x,y趋近于0
跪求极限Y=lim (xy+1)/x^4+y^4,当(x,y)→(0,0),
求下列各极限 lim(x,y)→(0,1) (2-xy)/(x^2+2y)
求极限lim(xy)^2/(x^2+y^2)^2,(x,y)趋于(0,0)
求极限 lim x→0 y→0[x^2+y^2+5/x+y sin(x+y)] 不懂极限,
lim((x-y)/(x+y))求极限.(x,y)→(0,0)
数学极限计算lim(x,y)→(0,0) xy/ [√(2-e^xy)-1]= lim(x,y)→(0,0) -xy/(