Mister Exam
Other calculators:
-
How to use it?
- Limit of the function:
-
Limit of (-1+e^(2*x))/(3*x)
-
Limit of (-1+3*x)/(5+x^2+7*x)
-
Limit of 1+13*x/5
-
Limit of (7+x+x^2)/(-1+e^x)
- Integral of d{x}:
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3/x^4
- Derivative of:
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3/x^4
-
Identical expressions
- three /x^ four
- 3 divide by x to the power of 4
- three divide by x to the power of four
- 3/x4
- 3/x⁴
- 3 divide by x^4
Limit of the function 3/x^4
The solution
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/3 \
lim |--|
x->oo| 4|
\x /
$$\lim_{x \to \infty}\left(\frac{3}{x^{4}}\right)$$
Limit(3/(x^4), x, oo, dir='-')
Detail solution
Let's take the limit
$$\lim_{x \to \infty}\left(\frac{3}{x^{4}}\right)$$
Let's divide numerator and denominator by x^4:
$$\lim_{x \to \infty}\left(\frac{3}{x^{4}}\right)$$ =
$$\lim_{x \to \infty}\left(\frac{3 \frac{1}{x^{4}}}{1}\right)$$
Do Replacement
$$u = \frac{1}{x}$$
then
$$\lim_{x \to \infty}\left(\frac{3 \frac{1}{x^{4}}}{1}\right) = \lim_{u \to 0^+}\left(3 u^{4}\right)$$
=
$$3 \cdot 0^{4} = 0$$
The final answer:
$$\lim_{x \to \infty}\left(\frac{3}{x^{4}}\right) = 0$$
$$\lim_{x \to \infty}\left(\frac{3}{x^{4}}\right)$$
Let's divide numerator and denominator by x^4:
$$\lim_{x \to \infty}\left(\frac{3}{x^{4}}\right)$$ =
$$\lim_{x \to \infty}\left(\frac{3 \frac{1}{x^{4}}}{1}\right)$$
Do Replacement
$$u = \frac{1}{x}$$
then
$$\lim_{x \to \infty}\left(\frac{3 \frac{1}{x^{4}}}{1}\right) = \lim_{u \to 0^+}\left(3 u^{4}\right)$$
=
$$3 \cdot 0^{4} = 0$$
The final answer:
$$\lim_{x \to \infty}\left(\frac{3}{x^{4}}\right) = 0$$
Lopital's rule
There is no sense to apply Lopital's rule to this function since there is no indeterminateness of 0/0 or oo/oo type
The graph
Other limits x→0, -oo, +oo, 1
$$\lim_{x \to \infty}\left(\frac{3}{x^{4}}\right) = 0$$
$$\lim_{x \to 0^-}\left(\frac{3}{x^{4}}\right) = \infty$$
More at x→0 from the left
$$\lim_{x \to 0^+}\left(\frac{3}{x^{4}}\right) = \infty$$
More at x→0 from the right
$$\lim_{x \to 1^-}\left(\frac{3}{x^{4}}\right) = 3$$
More at x→1 from the left
$$\lim_{x \to 1^+}\left(\frac{3}{x^{4}}\right) = 3$$
More at x→1 from the right
$$\lim_{x \to -\infty}\left(\frac{3}{x^{4}}\right) = 0$$
More at x→-oo
$$\lim_{x \to 0^-}\left(\frac{3}{x^{4}}\right) = \infty$$
More at x→0 from the left
$$\lim_{x \to 0^+}\left(\frac{3}{x^{4}}\right) = \infty$$
More at x→0 from the right
$$\lim_{x \to 1^-}\left(\frac{3}{x^{4}}\right) = 3$$
More at x→1 from the left
$$\lim_{x \to 1^+}\left(\frac{3}{x^{4}}\right) = 3$$
More at x→1 from the right
$$\lim_{x \to -\infty}\left(\frac{3}{x^{4}}\right) = 0$$
More at x→-oo
The graph