tính \(\lim\limits_{x\rightarrow0}\left(\dfrac{1-\sin x-\cos x}{1+\sin3x+\cos3x}\right)\)
Tính các giới hạn
a) \(\lim\limits_{x\rightarrow0}\dfrac{\sqrt{x+1}-\sqrt[3]{x-1}}{x}\)
b) \(\lim\limits_{x\rightarrow2}\dfrac{\sqrt[3]{x-3}+\sqrt[4]{2x-3}}{x-2}\)
Tính các giới hạn sau:
a) \(\lim\limits_{x\rightarrow0^-}\dfrac{2\left|x\right|+x}{x^2-x}\)
b) \(\lim\limits_{x\rightarrow-\infty}\left(\sqrt{x^2-x}-\sqrt{x^2-1}\right)\)
c) \(\lim\limits_{x\rightarrow-\infty}\dfrac{\sqrt[3]{1+x^4+x^6}}{\sqrt{1+x^3+x^4}}\)
Tính
\(\lim\limits_{x\rightarrow0}\dfrac{\sqrt[3]{x+1}.\sqrt{2022x^2+x+1}-1}{x}\)
tính \(\lim\limits_{x\rightarrow0}\dfrac{\sqrt{1+2x}-\sqrt[3]{1+3x}}{x^2}\)
Tính \(\lim\limits_{x\rightarrow0}\left(\dfrac{1}{\sin x}-\dfrac{3}{\sin3x}\right)\dfrac{1}{x}\)
Tính
\(\lim\limits_{x\rightarrow0}\dfrac{\left(x^2+2014\right)\sqrt[2014]{1-2014x}-2014}{x}\)
Tính các giới hạn
\(\lim\limits_{x\rightarrow0}\dfrac{\sqrt{x^2+x+1}-\sqrt[3]{x^3+1}}{x}\)
Tính
\(L=\lim\limits_{x\rightarrow0}\dfrac{\left(1+2013x\right)^{2014}-\left(1-2014x\right)^{2013}}{x^2}\)