Konstantreglen
lim
x→
x
0
k=k
x-alene-reglen
lim
x→
x
0
x=
x
0
plusreglen
lim
x→
x
0
(
f(x)+g(x)
)=
lim
x→
x
0
f(x)+
lim
x→
x
0
g(x)
minusreglen
lim
x→
x
0
(
f(x)−g(x)
)=
lim
x→
x
0
f(x)−
lim
x→
x
0
g(x)
gangereglen
lim
x→
x
0
(
f(x)⋅g(x)
)=
lim
x→
x
0
f(x)⋅
lim
x→
x
0
g(x)
brøkreglen
lim
x→
x
0
f(x)
g(x)
=
lim
x→
x
0
f(x)
lim
x→
x
0
g(x)