Polynomial Root Solving on the Electronic Differential Analyser (A Technique for Finding the Real and Complex Roots of a Polynomial using an Electronic Differential Analyser)

can be obtained. The technique is essentially a graphic one in which the function f(x) and its derivatives /' (x), /" (x), ■ ■ ■ are generated by an electronic differential analyser The method depends heavily on the ability of the analyser to produce an accurate plot of the function and its derivatives. The use of these accurate graphs is obvious for finding the real roots of the equation. But a systematic use of graphs for the finding of complex roots is not so obvious and hence not widely used [2]. This computer approach to the finding of the complex roots requires additional curves of the real and complex parts of the complex function