In plots made with 'complexplot3d', Maple uses by default a color wheel for the argument of complex numbers in which positive numbers are painted cyan and negative numbers are red. Is there a way to change this to the other common convention (i.e. cyan negative and red positive numbers)?

Any help would be really appreciated, as it's not convenient to have graphs made with different conventions in the same document and I wouldn't want to remake all the ones I already have.

I want to reference the previous equation/expression which is not displayed (':')in my worksheet. I allready know the '%' sign, but this references the previous equation/expression which was executed . By previous I mean the result (which is not displayed) in the previous line.

As I do not want the previous equation to be displayed I also cannot use the equation lable (CTRL+L).

Example

x:=a=b+1:

solve(previous,{b});

Thank you for your help.

I'm new here, so I'm not totally sure this is the right place to ask this. I apologize if it isn't, please let me know in that case.

My problem is that Maple won't recognize the built-in command 'complexplot3d'. For example, typing:

complexplot3d(z^2, z = -1-I .. 1+I)

doesn't do anything, and it's displayed again in blue as if it was not a command.

Any kind of help would be extremely helpful, as I have no clue of what's going on. Thanks in advance!

Hello people in mapleprimes

In the help of parse, there is the following example.

I could not understand why the first one is 4, and next 4^2, and the last 4^3 appeared, there.

Please tell me the way n is increased with the output taking 4, 4^2 and 4^3 sequentially in this example.

n := 0;
                             n := 0
input := "a := 4; a^2; a^3;";
                  input := "a := 4; a^2; a^3;"
parse(input,'lastread'='n','offset'=n,statement);
                               4
parse(input,'lastread'='n','offset'=n,statement);
                               16
parse(input,'lastread'='n','offset'=n,statement);
                               64

I know that it is written in the help that lastread shows the next unparsed character,

with the offset the next statement.

Thanks in advance

taro

how to compute Igusa invariant in maple?

why it is not included in maple?

how i can calculate roots of the characteristic polynomial equations {dsys and dsys2}
and dsolve them with arbitrary initial condition for differennt amont of m and n?
thanks
Kr.mw 
 

Download Kr.mw

Hi all,

I start working with the Grid package.
To familiarize myself with it I ran the "primeChecker" example, which of course has worked perfectly well.

Next I did this (a priori harmless) simple modifications :

1. within the primeChecker procedure :
   replace  myVal := userData[thisNode+1] :
   by         myVal := userData[thisNode+1, 1] :
2. before launching the procedure with Grid[Launch] :
   replace  userData := [ .... ] :  #which is a list
   by         userData := [ .... ] :  # the same thing
                userData := convert(userData, matrix): 

I get the following error message :
error, (in unknown) Matrix index out of range

What does it mean and how can I fix this ?

Thanks in advance

Dear all,

I have somme difficulties to calculate this integral.

int(I*sqrt((R*exp(I*theta)+1)/(R*exp(I*theta)-a)), theta = 0 .. Pi);

Thanks

hi.

how i can solve two equation with respect to parameter sigma1

SOLL.mw

Download SOLL.mw

Hello,

does anyone know a way to combine two plots in one where one is created with ScatterPlot3D (Package:Statistics) and the other one with plot3D (Package:plots)?

Normally you would write something like this:

but that only works if the plots are from the same package...

Hello dear!

Hope everyone fine, I am facing to solve the attached problem please find and fix it. I am waiting your kind response. 

naveed.mw

I have entered three functions into Maple and I would like to create a set of all possible two-function and three-function compositions involving the three functions. For instance, for my three functions f(x), g(x) and h(x), the set would contain f(g(x)), g(f(x)), f(g(h(x))), f(f(f(x))), etc. 

I'm also looking for a method that will be generalisable to larger numbers of initial functions than just three.

I have used solve to find the solution to an equation that has two solutions, and I want to give each solution a label so that I can use each individually in subsequent manipulations. How do I label each solution separately?

Hello people in mapleprimes,

I cannot obtain a proper result from the following code.

a:=int(((beta/beta[1,2])^(-theta/(1-theta))-kappa[1]^(-theta/(1-theta)))*m*beta^(m-1),beta=0 .. kappa[1]*beta[1,2]);

Please tell me if you know how to have maple calculate it.

Thanks in advance.

taro

Hello Dear!

I want to solve the system of linear equation but facing some problem please see the attachmen. I am waiting your positive response 

1_(1).mw