Hi,

I have those questions:

1) set

When I write these inputs,

x:={1,3,2}; y:={b,a,d,c}; z:={a[1],a[1,1],b[0],d[0],c[0],a[0],2};

the results are x := {1, 2, 3}, y := {a, b, c, d}, z := {2, a[0], a[1], a[1,1], b[0], c[0], d[0]}

Is there a way to get what I input

2) This problem in ordering numbers and words is verry important and hard when solving a large system of equations with:

restart:with(SolveTools): eqns:=[a[0...

The following simple procedure: 
SubsColumn: = proc (A, V, k) 
local B, m; 
with (LinearAlgebra); 
m: = ColumnDimension (A); 
B: = <A[..,1..m]|V>; 
B: = ColumnOperation (B, [k, m +1]); 
B: = DeleteColumn (B, m +1); 
B; 
end proc; 

solve the problem of...

I just got a smartphone, amazing. Wouldn't it be wonderful to have a mapleprimes app to conveniently view and post messages from a smartphone or a smartpad or whatever? Any plans to set one up? (I'm on the android platform)

The other suggestion/question I have is: any plans (by Maple or others) to make a Maple calculator widget? I'm currently using RealCalc, which is great, but it  doesn't have the advanced term-grouping capabilities of the Maple calculator.

What can be said about this divergent series:

 sum((cos(m)+I*sin(m))*(cosh(w)+sinh(w)),n=1 ..infinity) where m=Pi*n and w = ln(n)/n?

Calculate

int(cos(100*(x^4-x)), x = -infinity .. infinity)

with the relative error less than  10 percentages.

Hello,

I use 'SystemConnect' command to connect two transfer function, as the following codes illustrated.

with(DynamicSystems);
sys1 := TransferFunction(10/(s*(s+10)));
sys2 := TransferFunction(k*s^2/(s+20));
Warning, improper transfer-function, degree(num) > degree(den)
sys3 := SystemConnect(sys1, sys2, connection = negativefeedback, outputtype = tf);
Error, (in unknown) cannot convert improper transfer function to state-space model

I'm currently implementing the Poker test to determine whether a binary sequence possesses some specific characteristics that a truly random sequence would be likely to exhibit.

Maple can't solve the inequation `assuming`([solve(floor(160/m)>=5*2^m,[m])],[m::posint]);

However, `assuming`([solve((160/m)>=5*2^m,[m])],[m::posint]); works.

Is there a way to rewrite...

Hi friends,

I have this piecewise function:

restart:assume(n,integer):h := piecewise(n::odd, n^2, n^3);

I can not get explicitly the derivative:

diff(h,n);

But, with

restart:h1 := piecewise(And(n::integer, n::odd), n^2, n^3);

I can get the derivative explicitly:

diff(h1,n);

Why ?

Thanks in advance

k := 1:
alpha := vector([x*cos(theta), x*sin(theta), k*x]);

e1 := map(diff, alpha, theta);
e2 := map(diff, alpha, x);

G := matrix([[simplify(e1[1]^2 + e1[2]^2 + e1[3]^2), 0],[0, simplify(e2[1]^2 + e2[2]^2 + e2[3]^2)]]);

inv_e1 := evalm(1/G[1,1]*e1);
inv_e2 := evalm(1/G[2,2]*e2);

e11 := map(diff, e1, theta);
e12 := map(diff, e1, x);
e22 := map(diff, e2, x);

gamma_1_11 := simplify(evalm(e11&*inv_e1));
gamma_1_12 := simplify(evalm(e12&*inv_e1));

How to interpolate in terms of any form of algebra in maple?

For example, to interpolate a time series in terms of exponential or mixed with cos and sin?

I guess I have an easy question here. How do you write stuff in Maple which you don't want displayed? For example, if I wanted to set alpha=1 but I didn't want that printed after pressing enter?

Cheers

Hi all forum people, I need use the maple for symbolic solutions, I am a beginner user.

I read about the isolate, solve, equations, expressions and functions in maple, I have a great confusion in my head.

My needs are, make a equations (with currents and voltages) and isolate any variable in a time, and combine them with another equations.

  ic=vin/L*Ton+im

if=(vin-vo)/L*Toff+im

dil/dt=(if-im)/T

another case:

Hello friends,

I am using MAPLE 14. I have the following problems. I would like to plot the sequence of points "ww", and the constant funcion  (ordenate) 1/3.  The plot of my commands is ok in terms of the "spirit" of the output, but I would like

1. That in the abscisa appears values larger than 10..say  50.

2. The (horizontal)  line of the constant funcion 1/3 = function of (n)  is thinner (in the current output, this line is too thick).

While doing some Maple plotting I found myself asking why a high-end scientific computation application like Maple, which is capable of essentially very high ("arbitrary") precision floating-point computation, sometimes makes only crude use of hardware precision plot drivers. I looked around a bit, and found that and related issues are not restricted to Maple.

Let's look first at Maxima. Here's my first example, in Maxima (not Maple) syntax,

Maple cannot find maximum/extrema for this piecewise function?

http://img97.imageshack.us/img97/3931/mapleerror.gif