Abstract
The oscillatory properties of solutions to the second order functional differential equation
L
x
(
t
)
+
f
(
t
)
x
β
(
σ
(
t
)
)
=
0
,
t
≥
t
0
>
0
where
L
x
(
t
)
=
(
η
(
t
)
x
′
(
t
)
)
′
is a noncanonical operator, are studied. The main idea is to transform the noncanonical equation into canonical form which simplifies the investigation of oscillation of the equation. The obtained criteria are new and complement to the existing results reported in the literature. Examples illustrating the main results are presented.