Question

[Hoàng Ngọc nhi]

Tính giới hạn Lim 3^n-4^n+1/2×4^n+2^n

Answer 1

[Nguyễn Việt Lâm]

\(\text{Lim}\dfrac{3^n-4^n+1}{2.4^n+2^n}=\lim\dfrac{\left(\dfrac{3}{4}\right)^n-1+\left(\dfrac{1}{4}\right)^n}{2+\left(\dfrac{2}{4}\right)^n}=-\dfrac{1}{2}\)