Вопрос
lim _(xarrow infty )(x^5)/(e^x)
Решения
4.4
(254 Голоса)
Валерия
Экспертная проверка
мастер · Репетитор 5 лет
Ответ
To evaluate the limit
, we can use L'Hôpital's Rule, which is applicable for limits of the form
.First, let's confirm that we have an
form:
Since this is indeed an
form, we can apply L'Hôpital's Rule, which states that:
provided the limit on the right-hand side exists.Let \(f(x) = x^5\) and \(g(x) = e^x\). We need to find the derivatives of \(f(x)\) and \(g(x)\):
Now, apply L'Hôpital's Rule:
We still have an
form, so we apply L'Hôpital's Rule again:
Again, we have an
form, so we apply L'Hôpital's Rule once more:
And once more:
And one more time:
Finally, we have:
Thus, the limit is: