### Periodic solutions of a kind of Liénard equations with two deviating arguments

#### Abstract

In this paper, we deal with the existence of periodic solutions of

a kind of Liénard equations with two deviating arguments

$$

x''+f(t, x(t-\sigma(t)))x'(t)+g(t, x(t-\tau (t)))=p(t).

$$

Some new results on the existence of periodic solutions of the given

equations are proved by using the continuation theorem.

a kind of Liénard equations with two deviating arguments

$$

x''+f(t, x(t-\sigma(t)))x'(t)+g(t, x(t-\tau (t)))=p(t).

$$

Some new results on the existence of periodic solutions of the given

equations are proved by using the continuation theorem.

#### Keywords

Liénard equation; deviating argument; periodic solution; continuation theorem

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