$\lim _{x \rightarrow 1}\left(\frac{1}{x-1}-\frac{3}{x^2-1}\right)=$
lim_(x arrow 1) (sin^2(x-1))/(x^2)-1$\lim_{x \rightarrow 1} \frac{\sin^{2}(x-1)}
lim _(xarrow 1)dfrac ({x)^2-1}(x-1)(e)^dfrac (1{x-1)}=
A.lim _(xarrow 1)dfrac ({x)^2+x-2}({x)^2-1}=lim _(xarrow 1)dfrac ((x-1)(x+2))((x
lim _(x arrow 0)(x+2 e^x)^(1)/(x-1) = ( ).A. 1B. $\frac{1}{2}$C. $\frac{1}{4}$D.
lim _(xarrow 1)(dfrac (2)({x)^2-1}-dfrac (1)(x-1)) ;
arrow (overrightarrow (x)-(e)^x-1)-|||-(25) lim _(xarrow 0)((1+{x)^2)}^dfrac (1{
9.求下列函数的极限-|||-(1) lim _(xarrow -1)dfrac ({x)^3-1}(x-1);-|||-(3) lim _(xarrow in
9.求下列函数的极限-|||-(1) lim _(xarrow -1)dfrac ({x)^3-1}(x-1) =-|||-(3) lim _(xarrow i
计算下列极限:-|||-lim _(xarrow 1)(dfrac (2)({x)^2-1}-dfrac (1)(x-1)).
lim_(x→1)（(2)/(({x^2)-1)}-(1)/(x-1)）=（ ）A. -1B. $-\frac{1}{2}$C. $\frac{1}{2}$D.