lim[sin(xy)/xy],x趋向2,y趋向0,求极限
lim[sin(xy)/xy],x趋向2,y趋向0,求极限
求极限lim(xy^2)/(x^2+y^4) (x,y)趋向于0
lim[2-√(xy+4)]/xy x趋向于0 y趋向于0
求极限lim「ln(1+xy)」/(x根号y)x趋向于a,y趋向于0+
求极限lim(x趋向于0)ln(1+x^2)/sin(1+x^2)
(xy)^2/x^2+y^2的极限 x和y都趋向于0
二重极限问题,求(xy/(x^2+y^2))^(x^2)的极限,其中x趋向于无穷,y趋向于常数a,麻烦写下过程,
求极限lim【1-cosmx)/x^2】,x趋向0
二元函数求极限,分子为2-根号下(x+4),分母为xy,xy均趋向于0
x的平方加y的平方分之xy,当x,y都趋向于0的极限怎么求
多元函数极限lim sin(xy)/x (x.y) -> (0.2) = lim {[sin(xy) / xy ] *
求lim x趋向无穷 sin(x+1)/x^2的极限