#2 roots > 2

[Noah Roberts]

When using roots greater than 2 output on graph is a
dot. Also, x^(1/2) does not work correctly. On
25^(1/2) bc outputs 1, on 25^.5 bc outputs
"Runtime warning (func=(main), adr=9): non-zero scale
in exponent
1"

I am affraid that these two bugs make qplot impractical
for real use unless there are workarounds. I had hoped
to use qplot in my calculus course, but it needs to be
able to adiquately deal with rational expressions (and
other cases of div by 0) and roots.

Thanks,
NR