intergration problem of Geoff Prince, #2

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1 total messages Started by MLSAGE Fri, 26 Feb 1993 05:56

#62

Author: MLSAGE
Date: Fri, 26 Feb 1993 05:56

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The example of integration that did not work in REDUCE 3.4 submitted by Geoff 
Prince seems to be general.  The following gives proper results:
    int(x^n,x)
with variable n (even though n might be 0).  However as near as I can tell
    int(x^(a/b),x) only works for constants a and b if b is 2, 3, or 4.  It
may work for larger b is the fraction a/b is reducible to a'/b' where b' is
2, 3, or 4.
    The following statement lets the general case be evaluated:
    for all n let int(x^n,x)=x^(n+1)/(n+1);
    Even with that statement, the original system correctly evaluates the
expression when n equals -1.

Martin Sage
Syracuse University

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