Mister Exam

Limit of the function a*x

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The solution

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 lim (a*x)
x->oo     
$$\lim_{x \to \infty}\left(a x\right)$$
Limit(a*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
Other limits x→0, -oo, +oo, 1
$$\lim_{x \to \infty}\left(a x\right) = \infty \operatorname{sign}{\left(a \right)}$$
$$\lim_{x \to 0^-}\left(a x\right) = 0$$
More at x→0 from the left
$$\lim_{x \to 0^+}\left(a x\right) = 0$$
More at x→0 from the right
$$\lim_{x \to 1^-}\left(a x\right) = a$$
More at x→1 from the left
$$\lim_{x \to 1^+}\left(a x\right) = a$$
More at x→1 from the right
$$\lim_{x \to -\infty}\left(a x\right) = - \infty \operatorname{sign}{\left(a \right)}$$
More at x→-oo
Rapid solution [src]
oo*sign(a)
$$\infty \operatorname{sign}{\left(a \right)}$$