\(\lim\limits_{x\rightarrow2}\dfrac{4x^2-5x-6}{7x^2-4x-20}=\lim\limits_{x\rightarrow2}\dfrac{\left(x-2\right)\left(4x+3\right)}{\left(x-2\right)\left(7x+10\right)}\)
\(=\lim\limits_{x\rightarrow2}\dfrac{4x+3}{7x+10}=\dfrac{4.2+3}{7.2+10}=\dfrac{11}{24}\)
giúp mình với ; lim\(\dfrac{4-3^n}{2.3^n+2}\),lim\(\dfrac{3^{n+1}-2^n}{2-2.3^n}\)
Tìm giới hạn của hàm số: \(\lim\limits_{x\rightarrow0}\)\(\dfrac{\text{}\sqrt{1+2x}.\sqrt[3]{1+3x}.\sqrt[4]{1+4x}-1}{x}\)
lim\(\dfrac{2\sqrt{x}-3\sqrt{x+3}+2}{x-1}\)
Tìm giới hạn :
\(L=\lim\limits_{x\rightarrow+\infty}\left(\sqrt[3]{\left(x+a_1\right)\left(x+a_1\right)\left(x+a_1\right)}-x\right)\)
giới hạn \(lim_{x\rightarrow3^+}\left(x-3\right)\sqrt{\frac{x+1}{x^2-9}}\) thuộc dạng nào ?
cho lim \(\dfrac{f\left(x\right)-5}{x-1}=4\) khi x->1 , lim \(\dfrac{g\left(x\right)-1}{x-1}=5\) khi x->1
tinh lim \(\dfrac{\sqrt{f\left(x\right)\times g\left(x\right)+4}-1}{x-1}\)khi x->1
tim a,b để lim \(\dfrac{ax+b-2\sqrt{x}}{x^3-3x+2}=\dfrac{1}{12}\) khi x->1
Tìm các giới hạn sau:
a) \(\lim\limits_{h\rightarrow0}\dfrac{2\left(x+h\right)^3-2x^3}{h}\)
b) \(\lim\limits_{x\rightarrow1}\dfrac{\left(x+x^2+...+x^{2021}\right)-2021}{x-1}\)
