Invariant sets for the varactor equation
نویسندگان
چکیده
The differential equation ẍ+γẋ+x = f(t) with f(t) positive, periodic and continuous is studied. After describing some physical applications of this equation, we construct a variety of invariant sets for it, thereby partitioning the phase plane into regions in which solutions grow without bound and also those in which bounded periodic solutions exist.
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تاریخ انتشار 1971