My Lecturer give me this problems, help please, ...not all, .. one number is all right, at least I'll get an example to solve the other ....
Thank you very much
And for number 5), the variation of parameters methode is the methode taht using wronskian ? Sorry i can't remember the name of the methods...
First I suggest you read the following article:After I get the homogeneous solution then wath should I do, I mean, how to use the undetermined coefficient method? should I convert the "sinx " in to "e^ia thing
Method of undetermined coefficients - Wikipedia, the free encyclopedia
after reading this article you'll come to the conclusion that you should assume a particular solution of following form:
just plug it in the ode and equate the appropriate coefficients.