gradef problem, was pw.mac problem



We have,

gradef(pwdelta(x), diff_pwdelta(1,x))$
gradef(diff_pwdelta(n,x), 'und, diff_pwdelta(n+1,x))$

<snip>

diff(pwdelta(s*x-v),x,4);   // problem below
-> diff_pwdelta(4,s*x-v)*s^4

This last line should be
diff(pwdelta(s*x - v), x, 4);
-> diff_pwdelta(4, s*x-v)
by definition of diff_pwdelta().

I don?t know a workaround for this one.

Rich