数学题 (lim)X→0 Y→0 x/(x-y)=?
数学题 (lim)X→0 Y→0 x/(x-y)=?
一道数学题:lim(x,y)→(0,0)(x-y)/(x+y)
lim(x→0y→1)(1+xe^y)^(2y+x/x)求极限
lim((x-y)/(x+y))求极限.(x,y)→(0,0)
证明lim(x,y)→(0,0),xy/根号(x²+y²)=0
(lim) x/x-y=
y=lim (x → 0) ( √1+xsinx - √cosx) / arcsin^2x.y=lim (n → ∞)
高数:x→0,y→2lim[ln(x+e^xy)/x]=?
求两道多元函数的极限lim=(x²-y²-2x+2y)/(x+ y-2) ① (x,y)→(2,0)
跪求极限Y=lim (xy+1)/x^4+y^4,当(x,y)→(0,0),
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