I understand how to do the problem except the answer is confusing me
$\lim_{t\rightarrow0} \frac{e^t-1}{t^3}$
After taking the derivative I ended up with $\dfrac{e^t}{3t^2}$ and that would go to $\frac{1}{0}$ which doesn't seem like a reasonable answer. The answer book says it would be positive ∞. Why?