Mister Exam

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Limit of the function x*y

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You have entered [src]
 lim (x*y)
x->oo     
limx(xy)\lim_{x \to \infty}\left(x y\right)
Limit(x*y, 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
limx(xy)=sign(y)\lim_{x \to \infty}\left(x y\right) = \infty \operatorname{sign}{\left(y \right)}
limx0(xy)=0\lim_{x \to 0^-}\left(x y\right) = 0
More at x→0 from the left
limx0+(xy)=0\lim_{x \to 0^+}\left(x y\right) = 0
More at x→0 from the right
limx1(xy)=y\lim_{x \to 1^-}\left(x y\right) = y
More at x→1 from the left
limx1+(xy)=y\lim_{x \to 1^+}\left(x y\right) = y
More at x→1 from the right
limx(xy)=sign(y)\lim_{x \to -\infty}\left(x y\right) = - \infty \operatorname{sign}{\left(y \right)}
More at x→-oo
Rapid solution [src]
oo*sign(y)
sign(y)\infty \operatorname{sign}{\left(y \right)}