**I. Ramishvili, T. Tadumadze**

## Formulas of Variation for a Solution
of Neutral Differential Equations with Continuous Initial Condition

**Abstract:**

Formulas of variation are proved for a solution of quasi-linear controlled
neutral differential equations with variable delays, when at the initial moment
of time the value of the initial function always coincides with the value of the
trajectory.

**Keywords:**

Neutral differential equation, variation of solution.

**MSC 2000:** 34K40.