Lời giải:
\(\lim\limits_{x\to+\infty}\frac{x-\sqrt{4x^2+x-1}}{3x+2}=\lim\limits_{x\to+\infty}\frac{1-\sqrt{4+\frac{1}{x}-\frac{1}{x^2}}}{3+\frac{2}{x}}=\frac{1-2}{3}=\frac{-1}{3}\)
Lời giải:
\(\lim\limits_{x\to+\infty}\frac{x-\sqrt{4x^2+x-1}}{3x+2}=\lim\limits_{x\to+\infty}\frac{1-\sqrt{4+\frac{1}{x}-\frac{1}{x^2}}}{3+\frac{2}{x}}=\frac{1-2}{3}=\frac{-1}{3}\)
tìm giới hạn \(\lim\limits_{x\rightarrow-\infty}\dfrac{\sqrt{4x^2+2x-1}-x}{3x-2}\)
Tìm giới hạn:
a, \(\lim\limits_{x\rightarrow+\infty}x\left(\sqrt{x^2+2}-x\right)\)
b, \(\lim\limits_{x\rightarrow-\infty}\dfrac{3x^2-4x+6}{x-2}\)
tìm giới hạn
\(\lim\limits_{x\rightarrow-\infty}\frac{\sqrt{x^2+2x}+3x}{\sqrt{4x^2+1}-x+3}\)
tìm giới hạn
\(\lim\limits_{x\rightarrow-\infty}\frac{6x+5}{3x-\sqrt{4x^2+3x+1}}\)
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 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) \(\lim\limits_{x\rightarrow+\infty}\sqrt[n]{\left(x+a_1\right)\left(x+a_2\right)...\left(x+a_n\right)}-x\)
Đ9B3CC
tìm giới hạn
\(\lim\limits_{x\rightarrow-\infty}\frac{x\sqrt{4x^2-5x-3}}{x^2-3x+2}\)