integrating the diff command

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XcasEngGuy
Messages : 157
Inscription : mer. janv. 13, 2010 3:20 pm

integrating the diff command

Message par XcasEngGuy » mer. déc. 04, 2024 6:49 pm

I have a small problem. Integrating the diff command works well up to the 3rd derivative <meaning diff(y(x),x,3)>
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I actually use this. Fixable?

Matt

parisse
Messages : 5832
Inscription : mar. déc. 20, 2005 4:02 pm
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Re: integrating the diff command

Message par parisse » jeu. déc. 05, 2024 1:54 pm

This comes from the fact that intermediate derivatives are added to the list of depending variables of the expression, and there is a maximum value for checking f(u)*u' forms. The max value could be increased, but it would still fail for a larger derivative number. I don't think it's worth it, unless you have some real life example where it would help (I mean do some real computation that you can not do yourself).

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