Verify that e^x Cos(2x) and e^x Sin(2x) form a fundamental set of solutions of the differential equation [ y'' - 2y + 5y = 0 ] on the interval (- infinity, infinity).
With the e^x the "x" is the only upper score in the problem. The Cos and Sin are on the regular line of the problem.
A Fundamental set of solutions of a Differential Equation is investigated. The solution is detailed and well presented. The response was given a rating of "5/5" by the student who originally posted the question.