\(=\frac{\left|x\right|\sqrt{1+\frac{2}{x}}+3x}{\left|x\right|\sqrt{4+\frac{1}{x^2}}-x+3}=\frac{-x\left(\sqrt{1+\frac{2}{x}}-3\right)}{-x\left(\sqrt{4+\frac{1}{x^2}}+1+\frac{3}{x}\right)}=\frac{1-3}{2+1+0}=...\)
\(=\frac{\left|x\right|\sqrt{1+\frac{2}{x}}+3x}{\left|x\right|\sqrt{4+\frac{1}{x^2}}-x+3}=\frac{-x\left(\sqrt{1+\frac{2}{x}}-3\right)}{-x\left(\sqrt{4+\frac{1}{x^2}}+1+\frac{3}{x}\right)}=\frac{1-3}{2+1+0}=...\)
tìm giới hạn \(\lim\limits_{x\rightarrow-\infty}\dfrac{\sqrt{4x^2+2x-1}-x}{3x-2}\)
Tính các giới hạn
a) \(\lim\limits_{x\rightarrow+\infty}\dfrac{\sqrt[3]{x^3+2x^2-4x+1}}{\sqrt{2x^2+x-8}}\)
b) \(\lim\limits_{x\rightarrow-\infty}\dfrac{\sqrt{x^2-2x+4}-x}{3x-1}\)
Tìm giới hạn:
a, \(\lim\limits_{x\rightarrow+\infty}\dfrac{x-2}{3-\sqrt{x^2+7}}\)
b, \(\lim\limits_{x\rightarrow-\infty}\dfrac{\sqrt{x^2-x}-\sqrt{4x^2+1}}{2x+3}\)
Tính các giới hạn
a) \(\lim\limits_{x\rightarrow+\infty}\sqrt[3]{x^3+3x^2}-\sqrt{x^2-2x}\)
b) \(\lim\limits_{x\rightarrow+\infty}\sqrt[n]{\left(x+a_1\right)\left(x+a_2\right)...\left(x+a_n\right)}-x\)
Tìm giới hạn:
a, \(\lim\limits_{x\rightarrow+\infty}\dfrac{\sqrt{x^2+x+2}}{x-1}\)
b, \(\lim\limits_{x\rightarrow-\infty}\left(\sqrt{4x^2-x}+2x\right)\)
Tính giới hạn
\(\lim\limits_{x\rightarrow+\infty}\left(\sqrt[3]{x^3+3x^2}-\sqrt{x^2-2x}\right)\)
7)Tính giới hạn:
\(a)\lim\limits_{x\rightarrow+\infty}x\left(\sqrt{x^2+2x}-2\sqrt{x^2+x}+x\right)\)
\(b)\lim\limits_{x\rightarrow+\infty}\left(\sqrt[3]{x^3+3x^2}-\sqrt{x^2-2x}\right)\)
Tìm giới hạn:
a, \(\lim\limits_{x\rightarrow+\infty}x\left(\sqrt{x^2+2}-x\right)\)
b, \(\lim\limits_{x\rightarrow-\infty}\dfrac{3x^2-4x+6}{x-2}\)
đ10b1c5
tìm giới hạn
\(\lim\limits_{x\rightarrow+\infty}\frac{\sqrt{x^2+2x}+4x}{\sqrt{4x^2+1}+2-x}\)