log10, was: bug report, or am I doing something wrong?



>>>>> "Vadim" == Vadim V Zhytnikov <vvzhy at mail.ru> writes:

    Vadim> Raymond Toy writes:
    >>>>>>> "Frank" == Frank Palazzolo <frank.palazzolo at mcm1.com> writes:
    Frank> I'm just curious if there are other functions that exist
    >> in Maxima that fall
    Frank> into this same category - i.e. "Function implemented enough for
    Frank> calculational work but symbolically separate from most of the rest of the
    Frank> machinery of Maxima".  (log10(x)/log(x) or integral(log10(x),x) does
    Frank> nothing.)
    >> There are probably others, but here are a few of them that I know
    >> about:
    >> %he[n] (z)                     Hermite polynomial (Nota bene:
    >> `he', not `h'. See A&S 22.5.18)
    >> hstruve[n] (z)                 Struve H function
    >> lstruve[n] (z)                 Struve L function
    >> %f[p,q] ([], [], expr)         Generalized Hypergeometric function
    >> gammagreek(a,z)                Incomplete gamma function
    >> gammaincomplete(a,z)           Tail of incomplete gamma function
    >> slommel
    >> %m[u,k] (z)                    Whittaker function, 1st kind
    >> %w[u,k] (z)                    Whittaker function, 2nd kind
    >> erfc (z)                       Complement of the erf function
    >> ei (z)                         Exponential integral (?)
    >> kelliptic (z)                  Complete elliptic integral of the first kind (K)
    >> %d [n] (z)                     Parabolic cylinder function
    >> 

    Vadim> Off-topic.  I strongly dislike erratic the way these
    Vadim> function are named.   Probably specint and corresponding
    Vadim> documentation needs some revision.

Yes, I have plans for that, but since maxima doesn't know anything
about these functions, I haven't done anything about them.  specint
used to use %j[n](x), %y[n](x), and so on, but we've changed these to
bessel_j(n,x) and bessel_y(n,x).  specint also produces
assoc_legendre_p instead of %p, but I think it still wants %p on
input.

These will get fixed someday.

Ray