x^2 y" + 2 x^2 y' -2y = 0

I need to find the indicial equation and find the values of k but I don't understand how to find po and qo.

Thanks

Printable View

- November 23rd 2008, 01:42 PMHappy DancerSeries Solutions to 2nd Order DEs HELP!
x^2 y" + 2 x^2 y' -2y = 0

I need to find the indicial equation and find the values of k but I don't understand how to find po and qo.

Thanks - November 23rd 2008, 02:35 PMshawsend
To calculate the indicial equation, write it as:

If it's a regular singular point, cannot have it its denominator the factor x to a power higher than 1.

Write

Then it's simple, the indicial equation is:

In your case, it's - November 23rd 2008, 03:38 PMHappy Dancer
Sorry I still don't understand how you've got that

- November 24th 2008, 03:50 AMshawsend
Ok, your equation is: or

That means

and

That is and . Now just plug it into the indicial equation:

- November 24th 2008, 09:58 AMMoo
Please look here : http://www.mathhelpforum.com/math-he...s-problem.html for a similar problem (with a rough method)

- November 25th 2008, 09:17 AMHappy Dancer
Thanks, shawsend is it the same for q(x), it also cannot have its denominator the factor x to a power higher than 1.