Series Solutions to 2nd order Differential Equations

Q: I see a Series Solution under F2: 2nd order on the Differential Equations Made Easy app but how do i use it?
I love the apps by the way,
Thank you very much. Differential Equations Made Easy, Calculus Made Easy and a couple others have been extremely helpful.Thanks!

A: Under F2 C you can find Series Solutions to 2nd order Differential Equations on the TI89. Just enter the 3 coefficients on the left and the one on the right right side.
EX:
1
0
1
0

Next enter your desired degree , such as 5, next press ENTER a few times to view solution, notice the highest order term is displayed first , then in decreasing order.

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