Apparently, this user prefers to keep an air of mystery about them.
2 find the general solution of the system nov 11 '12
2 How to find the general solution of $(1+x^2)y''+2xy'-2y=0$. How to express by means of elementary functions? dec 11 '12
2 Verify that the equation $y''+y'-xy=0$ has a three-term, recursion formula and find its series solutions.. dec 11 '12
1 Find the general solution of each of the following systems (using method with constant coefficients). nov 11 '12