数学极限计算lim(x,y)→(0,0) xy/ [√(2-e^xy)-1]= lim(x,y)→(0,0) -xy/(
数学极限计算lim(x,y)→(0,0) xy/ [√(2-e^xy)-1]= lim(x,y)→(0,0) -xy/(
跪求极限Y=lim (xy+1)/x^4+y^4,当(x,y)→(0,0),
求极限lim(xy)^2/(x^2+y^2)^2,(x,y)趋于(0,0)
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)
求极限lim(x,y)→(0,0) [1-cos(xy)]/xy^2.
求下列各极限 lim(x,y)→(0,1) (2-xy)/(x^2+2y)
lim (x,y)->(0,0) xy/[根号下(xy+1)]-1的值为
lim (x,y)->(0,0) xy/[根号下(xy+1)]-1的值为
求极限lim(xy^2)/(x^2+y^4) (x,y)趋向于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-
二元函数极限lim(x,y)→(0,0)xy/√(x∧2+y∧2).书上用夹逼定理做的.即0<|xy|/√(x∧2+y∧
高数:x→0,y→2lim[ln(x+e^xy)/x]=?