(1) What is the value of nmax?
(2) You didn't say thing about c1. Is it a list of explicit numbers?
(3) Are you thinking about a purely numerical solution (Newton method, for example)?
--Barton
________________________________
From: maxima-bounces at math.utexas.edu [maxima-bounces at math.utexas.edu] on behalf of Ben Blomberg [bblomberg at mail.bradley.edu]
Sent: Thursday, April 04, 2013 20:22
To: maxima at math.utexas.edu
Subject: solver trouble
Hello All,
I am trying to use maxima to solve for y with the following code:
Ucr(y):=offset+c1[21]+2*sum(realpart(c1[m+20])*cos(2*3.14*(m-1)*y/dp) - imagpart(c1[m+20])*sin(2*3.14*(m-1)*y/dp),m,2,nmax+1);
solve(Ucr(y)-40.985=0,y);
c1 is a list and there are numerical values for offset, and dp.
When I try this i either get an error about adjusting 'linel' or a big block of nonsensical numbers and no value for y. Adjusting 'linel' only affects the display. I am not sure exactly what to do. IS there a way I can give 'solve' a range and to have it search for solutions in that range?
Thanks,
Ben