

1) [tex]\lim_{x->-1}\frac{\sqrt{1+x^{2}}-\sqrt{2}}{x+1}[/tex]
2) [tex]\lim_{x->2^{-}}\frac{\sqrt{4-x^{2}}}{x^{2}-3x+2}[/tex]
3) [tex]\lim_{x->1}\frac{x-1}{\sqrt{2-x}-2\sqrt{x}+\sqrt{2x-1}}[/tex]
4) [tex]\lim_{x->1^{+}}\frac{x^{3}-x^{2}-x+1}{(x-1)^{2}}[/tex]
2) [tex]\lim_{x->2^{-}}\frac{\sqrt{4-x^{2}}}{x^{2}-3x+2}[/tex]
3) [tex]\lim_{x->1}\frac{x-1}{\sqrt{2-x}-2\sqrt{x}+\sqrt{2x-1}}[/tex]
4) [tex]\lim_{x->1^{+}}\frac{x^{3}-x^{2}-x+1}{(x-1)^{2}}[/tex]