a bug in Integrate (2nd message)038 (10/22/2011 10:13:25 AM) comp.soft-sys.math.mathematica int = 1/((x^2 + x + 1)*Sqrt[x^2 - x + 1]);
As I told in the previous message Mathematica gives wrong result for
the following integral
Integrate[int, {x, -1, 0}]
the problem is (I guess from what I fi... dimitris
a bug in Integrate #2036 (10/22/2011 10:11:21 AM) comp.soft-sys.math.mathematica The following has a connection with the recent post of mine called
Simplification.
http://groups.google.com/group/comp.soft-sys.math.mathematica/browse_thread/thread/b6e8fc7f70a0f20f#
Let
int = 1/((x^... dimitris
simplification #6149 (10/19/2011 9:40:01 AM) comp.soft-sys.math.mathematica Hello to all.
I would appreciate your suggestions about simplifying further the
following lengthy expression.
ArcTan[(3*(Sqrt[3] + I*x - I*x^2)*(1 - x + x^2))/(-3 + I*Sqrt[3] - 3*x
- 3*I*Sqrt[3]*x + 3*x... dimitris
list equation540 (10/6/2011 8:38:44 AM) comp.soft-sys.math.mathematica Hello to all.
Let
lst = Tuples[Range[100], 2];
In the previous list appear elements such us {x,y} and {y,x}. (e.g.
{3,4} and {4,3}).
I want to create a new list with {y,x} dropped (that is, in the ne... dimitris
simplification #51136 (10/4/2011 5:40:51 AM) comp.soft-sys.math.mathematica Hello.
Let
o1 = 1 + Sqrt[15 + 2*Sqrt[35] + 2*Sqrt[6*(6 + Sqrt[35])]];
o2 = 1 + Sqrt[3] + Sqrt[5] + Sqrt[7];
o1 is equal to o2.
o1 == o2 // FullSimplify
True
The question is how to make Mathemat... dimitris
count zeros in a number1347 (10/2/2011 6:40:04 AM) comp.soft-sys.math.mathematica Hello.
Consider e.g. the number 24^24*55^55.
This number ends with exactly 55 zeros as the following demonstrate
In[201]:= Mod[24^24*55^55, 10^55]
Mod[24^24*55^55, 10^56]
Out[201]= 0
Out[202]= 20000... dimitris
HoldForm and Sum342 (10/1/2011 7:08:15 AM) comp.soft-sys.math.mathematica Hell to all.
A (well-known) nice example of the use of HoldForm is:
Sum[(HoldForm[#1] & )[i], {i, 1, 10}]
(*output omited*)
I want to do the same with 1/i
Sum[(HoldForm[#1] & )[1/i], {i, 1, 10}]
... dimitris
unable to save notebook082 (7/21/2011 9:54:11 AM) comp.soft-sys.math.mathematica Hello to all.
When my student tries to save a document (e.g. hh its name) the
following message appears...
"Mathematica could not find enough disk space to save the file C:\Users
\=D7\[Rho]=DE\[Sigma]\[Ta... dimitris
Boundary Value Problem (a correction)034 (8/2/2009 9:55:22 AM) comp.soft-sys.math.mathematica May be is the hot weather in Greece, but the fact is that I forgot to
write that the boundary conditions
> bc1 = (b^2 - 2)*D[f[x, y], {x, 2}] - 2*D[g[x, y], {x, 1}, {y, 1}] == (-
> P)*DiracDelta[x];
> bc2... dimitris
Solving a simple equation448 (10/4/2011 5:39:49 AM) comp.soft-sys.math.mathematica Hi there, I wonder why the following equation cannot be solved:
\[Kappa] = 1.4
\[CapitalTheta] = 10;
NSolve[Tan[\[Theta] degree] ==
2*Cot[\[Beta] degree]*(ma1^2*Sin[\[Beta] degree]^2 - 1)/(
ma1^2*(\... eizdealer(1)
Only real data352 (10/15/2011 10:05:59 AM) comp.soft-sys.math.mathematica Hello,
I have a problem to exclude complex solutions. I tried
data1={2,3/4,1.3,=E4}
{2,3/4,1.3,=E4}
Cases[data1, Except[_Complex]]
{2,3/4,1.3}
and got, what I expected.... HB-Kowalczyk-Schroeders(7)
How to create this kind of list545 (10/15/2011 10:08:32 AM) comp.soft-sys.math.mathematica Hello there,
I am thinking about creating such a list.
I have 2 lists with the same number of elements.
The idea is to create one list which was taken from these previous two ones
in the following way:
Tak... szymon.roziewski(16)
Limit of nested function162 (10/16/2011 8:47:07 PM) comp.soft-sys.math.mathematica How can I to calculate the limit of a nested function . Mathematica 6
yields an error message "... Non negative machine size integer ...".
For example, let
f[x,n]=Nest[Sqrt[# Sqrt[#]]&,x,n]
For x=3,... mibelair(8)
simplification #6149 (10/19/2011 9:40:01 AM) comp.soft-sys.math.mathematica Hello to all.
I would appreciate your suggestions about simplifying further the
following lengthy expression.
ArcTan[(3*(Sqrt[3] + I*x - I*x^2)*(1 - x + x^2))/(-3 + I*Sqrt[3] - 3*x
- 3*I*Sqrt[3]*x + 3*x... dimmechan(1125)
Simplifying radicals #2738 (10/20/2011 11:49:28 AM) comp.soft-sys.math.mathematica Hi, I'm working with some introductory topics in radicals.
I know that Mathematica assumes things about the domain used in
problems, so the principal cube root of a negative number will be
complex... or ... tidetabletom(11)
Full simplify problem446 (10/22/2011 10:18:37 AM) comp.soft-sys.math.mathematica Hello,
Could anyone explain why the following does not give zero?
In[72]:= Assuming[
x == y + z,
FullSimplify[
E^x - E^(y + z)
]
]
Out[72]= E^x - E^(y + z)
Thanks!
... ffcitatos(7)