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1/cos(x)

Limit of the function 1/cos(x)

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       1   
 lim ------
x->oocos(x)
$$\lim_{x \to \infty} \frac{1}{\cos{\left(x \right)}}$$
Limit(1/cos(x), x, oo, dir='-')
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
Rapid solution [src]
<-oo, oo>
$$\left\langle -\infty, \infty\right\rangle$$
Other limits x→0, -oo, +oo, 1
$$\lim_{x \to \infty} \frac{1}{\cos{\left(x \right)}} = \left\langle -\infty, \infty\right\rangle$$
$$\lim_{x \to 0^-} \frac{1}{\cos{\left(x \right)}} = 1$$
More at x→0 from the left
$$\lim_{x \to 0^+} \frac{1}{\cos{\left(x \right)}} = 1$$
More at x→0 from the right
$$\lim_{x \to 1^-} \frac{1}{\cos{\left(x \right)}} = \frac{1}{\cos{\left(1 \right)}}$$
More at x→1 from the left
$$\lim_{x \to 1^+} \frac{1}{\cos{\left(x \right)}} = \frac{1}{\cos{\left(1 \right)}}$$
More at x→1 from the right
$$\lim_{x \to -\infty} \frac{1}{\cos{\left(x \right)}} = \left\langle -\infty, \infty\right\rangle$$
More at x→-oo
The graph
Limit of the function 1/cos(x)