Hi On Fri, Jan 12, 2018 at 4:10 PM, João Alberto de França Ferreira <[email protected]> wrote: > Is there a way to compute the local maximum of the absolute value of a > polynomial with complex coefficients? the below snippet should exemplify my > problem. ...
Maybe a trick like this works: f(x) = x^2 + 2*I*x + 2 g = lambda x: abs(f(x)) find_local_maximum(g,-1,1) this gives (3.6055511727769516, 0.99999996297566163) while find_local_maximum(abs(f(x)),-1,1) gives TypeError: unable to coerce to a real number The difference is that one is a python function while the other one is a SymbolicExpression, not sure why one works and the other doesn't. Thanks, -- Vegard -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
