Re: is it a bug?!please help.
- To: mathgroup at smc.vnet.net
- Subject: [mg107218] Re: is it a bug?!please help.
- From: JH <jlucio at ubu.es>
- Date: Fri, 5 Feb 2010 07:13:08 -0500 (EST)
- References: <hkgl3d$6t8$1@smc.vnet.net>
I don't have any answer. I have tried several things:
FullSimplify[\!\(
\*UnderoverscriptBox[\(\[Sum]\), \(i = 1\), \(n\)]\(a[i]\)\) + \!\(
\*UnderoverscriptBox[\(\[Sum]\), \(i = 1 + n\), \(m\)]\(a[i]\)\),
n > 1 && m > n]
Solve[\!\(
\*UnderoverscriptBox[\(\[Sum]\), \(i = 1\), \(n\)]\(a[i]\)\) + \!\(
\*UnderoverscriptBox[\(\[Sum]\), \(i = 1 + n\), \(m\)]\(a[i]\)\) ==
x, x, n]
AND
Reduce[\!\(
\*UnderoverscriptBox[\(\[Sum]\), \(i = 1\), \(n\)]\(a[i]\)\) + \!\(
\*UnderoverscriptBox[\(\[Sum]\), \(i = 1 + n\), \(m\)]\(a[i]\)\) ==
x && m > n, x, Reals]
DON'T WORK, and I don't know why. Does anyone?
Other similar example is with definite integrals (Mathematica does no
simplification):
FullSimplify[\!\(
\*SubsuperscriptBox[\(\[Integral]\), \(a\), \(b\)]\(f[
x] \[DifferentialD]x\)\) + \!\(
\*SubsuperscriptBox[\(\[Integral]\), \(b\), \(c\)]\(f[
x] \[DifferentialD]x\)\), {x, f[x], a, b, c} \[Element] Reals]
AND THIS (?????)
FullSimplify[\!\(
\*SubsuperscriptBox[\(\[Integral]\), \(a\), \(b\)]\(f[
x] \[DifferentialD]x\)\) + \!\(
\*SubsuperscriptBox[\(\[Integral]\), \(b\), \(a\)]\(f[
x] \[DifferentialD]x\)\), {x, f[x], a, b, c} \[Element] Reals]
JH