Hi!

Im having some weird results when using either subs or sum with a variable able to take on different values. I have been able to reduce the problem into the following:

>subs(x=0, 0^x )

 answer: 0

But when i simply type:

> 0^0 

the answer is the correct:  1

Why is this happening? (same thing often also occurs when i use sum, eg it says that sum(0^x * a , l=-3..3 ) =...

I have several functions that cannot be integrated analytically but are to be used (repeatedly!) in further integrations. I have created a table of values of these integrals for a mesh of parameter values.   If I then use the ArrayInterpolation function to compute just one value at one point - it's very inefficient - takes lot's of time...  

   What is the optimal way of defining "InterpolatingFunction"  (in the language of Mathematica)?  Are...

Which algorithm does the LinearAlgebra->MinimalPolynomial function use to compute the minimal polynomial of a matrix?

Thank you.

Hello,

I just lost the result of a 20h calculation due to the last-name evaluation using tables. Consider that

t := table([1=2]):

s := t:

save s, "table":

restart:

read "table":

s[1];

evaluates to t[1]. The save command only...

How can I expand (1+x)^n, where n is a posive integer number?

Hi,

I have this matrix with coefficients that I need to estimate;

I get there after some simple calculations and I know that my matrix it´s equal to the zero matrix; I have something like:

A:=Matrix(3, 3, [5*a-4,  5*sqrt(a) *sqrt(b)-5, 7*sqrt(a) *sqrt(c)-6,  

        8*sqrt(a) *sqrt(b)-5, 8*b-2,  8*sqrt(b) *sqrt(c)-9,   

        4*sqrt(a...

Hello, i'm having a problem whit my code for Finites Differences, but I don't really understand why. 

The principal error said this "

Error, (in fsolve) eq[2] is in the equation, and is not solved for"

The other errors come from this one, but the strange thing is my code work whit differents "h"

For example whit h=1 it works, but with h=2.5;0.5;0.1 It doesn't works.

Please help I'm kind of amateur whit Maple

To begin with, there may be some confusion about units, because in Maple units are an organizational tool and a dimension specifier.

I am trying to prepare a document using 2D. I am not experienced, but am using Help, Maple on the web, &c., extensively to come up to speed. I wanted to get rid of units expressed in [[]] because I am not used to seeing them.

I am

1. I'd like to subscript ESCS below, but cannot unless I use (z)
2. It would be nice to use "natural units" for ESCS(z)
3. It would be nice to remove nT outside the vector in BavgSCS
4. It would be nice to combine the units in EBPP
5. In B:=norm(), the |nT| causes future problems

For each result, I'd like to set the tolerance for zero to some value so that I don't get -0.0. For example, I might choose 10^-5 to be zero for one result and 10^-12 for another.

These notes are also in the attached file.Maple_primes_questio.mw

Dear Markiyan Hirnyk 

From  Phase-space trajectories i mean below photo which the asterisk arecritical points. but how can i compute the critical points and their nature ( stable , unstable , saddle) with maple ?

Thank for your time

Jacobe

Thanks a lot Markiyan, and I am sorry I may have overlooked this already answered question. But, now I have just one more thing to know. On using AllSolutions = true in solve I get the answer as x = _z1~ ∏ / k, I then try to subs my fav symbol N instead of _Z1~, but Maple doesn't take it! It keeps it as it is. What kind of constant is this _Z1~, I had thought it to be the same as _C1, which is used by Maple while solving any ODE.

Reason why I want to...

I am using the function solve() to find roots of a trig. equation. Such as for sin(k*x) = 0, Maple retuns x = 0, whereas I expecting to get  x = n ∏/k, for n = 0,1,2,.... I am sorry I am new to Maple, can anyone help me get what I am looking for?

Thank you

nonlinear_system.pdf

Has anyone seen this form of a nonlinear equation with respect to X, but linear with respect to Y & Z?  I provided a contour plot within the region for all 3 variables between -2 & 2.  The plot is actually Z*conjugate(Z) so that the magnitude is above ZERO.  If I am correct I may have seen this before in orbital mechanics, but my undergrad years are a bit...

 What justifies the t-1; to achieve this result?

restart;
interface(warnlevel = 0, imaginaryunit = I, rtablesize = 12);
with(plots); with(plottools);
alias(FFT = DiscreteTransforms[FourierTransform], IFFT = DiscreteTransforms[InverseFourierTransform]);

Temp := [24.2, 28.4, 32.7, 39.7, 47.0, 53.0, 56.0, 55.0, 49.4, 42.2, 32.0, 27.1];
POI := seq([n, Temp[n]], n = 1 .. 12);

 p1 := pointplot([POI], labels = ["x~month", "y = Temperature~ºF"...