Hello,

I'm looking for a simple way of building a matrix W whose columns will be column vectors w[1], w[2],...w[h] where h=1..r. I want to be able to incorporate this into a procedure in which h might be varied (otherwise I would just build a matrix e.g. <w[1] | w[2] | w[3]> manually).

Thanks

Magdalena

I input

w := proc (x, theta, t) options operator, arrow; sin(m*Pi*x/L)*cos(n*theta)*exp(I*omega*t-I*g*x) end proc;l[1] := (D[`$`(1, 2)](w))(1, (1/3)*Pi, 2)+(1-sigma)*(D[`$`(2, 2)](w))(1, (1/3)*Pi, 2)/(2*R^2)-K*rho[C]*h*(D[`$`(3, 2)](w))(1, (1/3)*Pi, 2); L[1] := simplify(l[1]/exp((2*I)*omega-(1.326880917*10^14*I)*gg*kk))

and it shows

Hello,

Happy New Year!

My problem:

I don't know why algsubs fails in the following case:

restart;
Xw:=2*Pi^2*(sin(w)*cos(5*w)+sin(4*w))/(w*(Pi-2*w)*(2*w+Pi));
algsubs(w=2*Pi*f,Xw);# problem in the denominator. w is not substituted.
subs(w=2*Pi*f,Xw);# subs works correctly
 

(I have Maple 13)

Hello,

Is there any function that deals with business days in Maple (sth like workday function in Excel)

The format of worday function in excel is: workday(start date, days, holidays). In fact it yealds the targets date with given start date and business days and possible holidays in that range.

For example,5 pictures,how to rename  the five picture use particular names,name1,name2,name3,name4,name5

name1~name5,are different words,

name1=alpha,name2=hello,name3=list,...

the names are in the the text,like this form:

+cognizant
#
$
+coagent
#
+rendering
#
+vaccine

of course this is more simple:

cognizant

coagent

vaccine

and other form with some identification codes

rename the picture file with the name in the .txt file.

5^2^2^2^2   I get a rediculously large number where in the middle it has [...45608 digits...] why am I unable to right click and use the explore option to view this number?  How do I explore this number?

question1:

\  Escape next character for entering "^" and "_"

I don't know what's this mean.

Is there a method to work with Reals or Complex modulo Integers (need not
to be modulo a discrete group, circle or torus is fine for me)?

Where the residue class is represented in the unit interval or square (as
the command modp does in the finite case)?

What I have in mind is to modify 'argument' to 'argument modulo 2*Pi', but
mod is for integer cases.

I want to learn more about ImpulseResponse functions and the ImpulseResponsePlot in Maple.
Could anyone please explain how it works ? I want to start with a simple example ie
a simple transfer function which is very easy to understand.

with(DynamicSystems):
sys1 := TransferFunction(s*(s-1)/((s+2)*(s+4)*(s+6))):
ImpulseResponsePlot(sys1, 2);
 

Hi, I want to count how many numbers in a list have a certain property. I tried something like

add(i->if i < 2 then 1 else 0 end if, i in list) 

but this doesn't work. How do I do this?

Thanks in advance.

Hi I am trying to create a bit of code that fits data points to a curve

right now I have

with(statistics):
NonlinearFit((   (A/2)/((B-r)^2+(A/2)^2)+C1+C2*r+C3*r^2),WEE,dde,r);

where WEE and dde are vectors containing the X and Y values respectively.

I was wondering if there was any way to set a range of values that the parameters can lie between

for instance 
0<A<1
and  -3<B<3

I was wondering how to build that into the code

for which function f(x) the expression is minumum

(diff(f(x), x, x, x, x))*(diff(f(x), x, x))-(1/2)*(diff(f(x), x, x, x))^3

Using Maple 12 I have the following behaviour, which I find odd:


1. 'evalb' is correct, 'is' turns out to be false (by example):

  eq:=1/2*I*(-z+ln(exp(z)))/Pi = -1/2*I*(z+ln(exp(-z)))/Pi;

  evalb(eq);
                                false
  is(eq);

I want to write  K^(p-1)*L^(-p+1)   as   (K/L)^(p-1)  .

How can this be done with maple command without simply typing it ?