Marshall Hamilton ha scritto:
> Perhaps this is the kind of thing you want?
>
> sage: var('x')
> sage: f = -x^4 + 9*x^3 - 23*x^2 + 31*x - 15
> sage: f.find_maximum_on_interval(0,6)
>
>
Is it equivalent to what we get with
plot(f,(0,6)).get_minmax_data()
?
> you can get the documentation for that. For symbolic answers you
> could do
>
> sage: solve(diff(f,x)==0,x)
>
> but of course that is more limited in what it can answer.
>
In particular, it does not solve correctly trigonometric equations : it
finds only one solution and looses if a higher local maximum exists at
another place.
Laurent
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