Soru
3. Given that lim _(xarrow 0)(f(x))/(Ax^4)+Bx^(2)=C find lim _(xarrow 0)(f(x))/(x^2) 20p
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Usta · 5 yıl öğretmeni
Uzman doğrulaması
Cevap
To find the limit of the given expression, we can use the fact that the limit of a quotient is equal to the quotient of the limits, provided that the limit of the denominator is not zero.Given that
, we can rewrite this as:
Since the limit of
as
approaches 0 is 0, the first term becomes 0. Therefore, we have:
Now, we can use the fact that the limit of a quotient is equal to the quotient of the limits:
Since the limit of
as
approaches 0 is 0, we have:
This is an indeterminate form, and we need to use L'Hopital's rule to evaluate it. L'Hopital's rule states that if the limit of a quotient is in the form
or
, then the limit of the quotient is equal to the limit of the quotient of their derivatives.Differentiating the numerator and denominator with respect to
, we get:
Evaluating the limit of this expression as
approaches 0, we get:
This is still an indeterminate form, and we need to use L'Hopital's rule again. Differentiating the numerator and denominator with respect to
, we get:
Evaluating the limit of this expression as
approaches 0, we get:
Therefore, the limit of the given expression is
.