- Determine L para que a função dada seja contínua no ponto dado. Justifique.
a) f(x) = \left{\begin{array}{ll}
\frac{x^2 - 4}{x - 2} & \text{se } x \neq 2 \
L & \text{se } x = 2
\end{array}\right. \quad \text{em } p = 2
b) f(x) = \left{\begin{array}{ll}
\frac{x^2 - x}{x} & \text{se } x \neq 0 \
L & \text{se } x = 0
\end{array}\right. \quad \text{em } p = 0