Hi,
Consider the following code:
x = var('x')
f = function('f')(x)
sol = desolve(diff(f,x), [f,x])
print "sol =", sol
solve(sol, _C)
For which I'm getting NameError: name '_C' is not defined. What would be the right way to set the integration constant after the resolution of the differential equation?
Thanks!
Like this (for instance setting the integration constant to 2):
sage: sol2 = sol.subs({SR.var('_C'): 2})
sage: print("sol = {}".format(sol2))
sol = 2
For the record, a workaround is to declare var('_C')right before solve(sol, _C).
Asked: 2017-02-02 12:10:46 +0100
Seen: 688 times
Last updated: Feb 10 '17
Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.