Re: beginner’s question with Maxi ma
| Newsgroups | gmane.comp.mathematics.maxima.general |
|---|---|
| Message-ID | <[email protected]> |
> If you want to put the first argument of a sum-like function > at the end, so you say rsum(i,1,n,f(i)), then here's a > definition for a reversed sum, rsum. [this ancient code is > using original lisp names: (car '(a b c d)) is a. > (cadddr '(a b c d)) is d.] Thank you for your enlightening comparison of the LISP implementations of Maxima’s sum() function with your rsum() function. car and cadddr take me back to a programming languages course that I’d had in the 1980s. > Of course humans are very flexible and in most circumstances > I would think that learning to use sum() should not be much > of a burden. Humans are indeed very flexible; consider the various ways that humans can express a date as a combination of year, month, and day. Some people have a preference for date components to be in a certain order, even though it wouldn’t be much of a burden to put those components in a different order. Learning to put those components in a particular order is orthogonal to having a preference for putting them in another order; they’re not mutually exclusive. _______________________________________________ Maxima-discuss mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/maxima-discuss