$\lim_{x \rightarrow 1} \frac{\sin^{2}(x-1)}{x^{2}-1}$
lim_(x→1)((2)/(({x^2)-1)}-(1)/(x-1))=( )A. -1B. $-\frac{1}{2}$C. $\frac{1}{2}$D.
极限 lim_(x arrow 0) ( (2 + e^frac(1)/(x))(1 + e^(2)/(x)) + (sin x)/(|ln(1+x)|) )
lim_(x to 0) (2^x-1)/(x)= ( )A. ln2B. 2C. 1D. 0
lim _(x arrow 1)((1)/(x-1)-(3)/(x^2-1))= $\lim _{x \rightarrow 1}\left(\frac{1}{
lim _(x arrow 0)(x+2 e^x)^(1)/(x-1) = ( ).A. 1B. $\frac{1}{2}$C. $\frac{1}{4}$D.
(1992)lim_(xto0)(e^x-sin x-1)/(1-sqrt(1-x^2))(1992)$\lim_{x\to0}\frac{e^{x}-\sin
极限lim _(x arrow 0) x sin (1)/(x^2)=( )A. 1;B. $\infty$;C. 不存在.D. 0;
lim_(x arrow infty ) ((1+x)/(x))^2x$\lim_{x \rightarrow \infty } (\frac{1+x}{x})
②lim_(xto+infty)(1+x)^(1)/(x).③lim_(xtoinfty)(1+(1)/(sqrt(1+x^2)))^x. ④lim_(xto
lim_(x arrow infty ) (2x^3-x+1)$ \lim_{x \rightarrow \infty } (2x^3-x+1) $