if lim f(x) = -4, what is the value of lim f(x)³? x→20 x→20

if lim f(x) = -4, what is the value of lim f(x)³? x→20 x→20
Answer
Explanation:
Step1: Aplicar regla de límites
Si $\lim_{x\rightarrow a}f(x) = L$, entonces $\lim_{x\rightarrow a}[f(x)]^n = L^n$. Aquí $a = 20$, $L=-4$ y $n = 3$.
Step2: Calcular el valor
$\lim_{x\rightarrow20}[f(x)]^3=(-4)^3$. $(-4)^3=(-4)\times(-4)\times(-4)= - 64$.
Answer:
$-64$