求极限Y=lim (xy+1)/x^4+y^4,当(x,y)→(0,0),
跪求极限Y=lim (xy+1)/x^4+y^4,当(x,y)→(0,0),
求极限(工本高数)lim [2-(xy+4)^(1/2)]/xyx->0y->0证明函数f(x,y)=(x+y)/(x-
求极限lim(xy^2)/(x^2+y^4) (x,y)趋向于0
数学极限计算lim(x,y)→(0,0) xy/ [√(2-e^xy)-1]= lim(x,y)→(0,0) -xy/(
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)
微积分极限问题LIM X趋近于0 Y趋近于2 X的平方乘以Y 除以 X的4次方 + Y的平方 求极限 当XY沿曲线Y=K
求极限lim(x,y)→(0,0) [1-cos(xy)]/xy^2.
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lim(x→0y→1)(1+xe^y)^(2y+x/x)求极限
怎么求多元函数极限lim sin(xy)(x,y)->(0,0) ------- 怎么求这个极限啊?x
二元函数求极限问题lim[﹙2-e^xy﹚^1/2]-1=lim1/2(1-e^xy)(x,y)→(0,0) (x,y)