Digital Signal Processing Reference
In-Depth Information
If the functions
f(x)
and
g(x)
both vanish for
x = a,
such that
f(x)/g(x)
assumes
the indeterminant form 0/0, then
x:a
f(x)
x:a
f
¿
(x)
lim
g(x)
=
lim
g¿(x)
,
provided that the limit exists as
x
approaches
a
from one or both sides. This rule also
applies for the indeterminant form
q
/
q
.
