sin(x-1)/1-x2的极限

sin(x-1)/1-x2的极限 [sin(x3-1)/(x2-1)]的极限,x趋于1 求极限lim X→∞ [1+ x2/2 -√(1+ x2)]/(cos x –e x2 )sin x2 亲 [(x2-1)/x2]x的极限,x趋于正无穷 急 x趋于无穷 求x2（1 — x sin 1／x）的极限很着急 [(x2+x-2)/(x-1)]的极限,x趋于1 求x*sin[2x/(x^2+1)]的极限 【a+x*sin(1/x)】的极限,x>0 请求：二元函数求极限lim (x2+y2 )1/2-sin(x2+y2 )1/2(x,y→0) (x2+y2 )3/2请帮忙解决,题中的数字均为上标(x2+y2 )1/2-sin(x2+y2 )1/2除以 (x2+y2 )3/2当xy均趋于0时,求二元函数的极限 [(x2 +1)/(x-2)]的极限,x趋于1 根号下x2-x+1的极限,x趋于2 根号下x2-x+1的极限,x趋于2 lim x->0 ,sin(1/x) 的极限?lim x->0 ,x*( sin(1/x) ) 的极限? [Sin(1-x)/Inx]的极限,x趋于1 sin(1/x) 的极限,x趋于(2/π) sin(x+1)-sinx当x趋向无穷大的极限 sin(sinx)/x,x 趋于0的极限sin(sin(x))/x=[sin(sin(x))/sin(x)]*sin(x)/x=1*1=1sin(sin(x))/sin(x)这一部我不明白阿 lim x-∞ x2-1/3x2+x 求极限