In my experience, the specification of the dependent variable(s) is not necessary when it is obvious from the ODE.

@Stud So, is your entire problem now solved?

 When you put a pair of numbers in parentheses, separated by a comma, what do you mean by that?

@jenniferchloe Indeed, the URL that you gave does appear to be a complete LOGO interpreter written in Maple.

@mutaz Your equation was shown in the original post, but it was not in a plaintext form that could be cut-and-pasted. Please don't use .docx files here. Maple doesn't read .docx, and nobody wants to retype your lengthy equation by hand into Maple.

Please post your equation in a form that can be cut-and-pasted or upload a worksheet. Also, there is only one equation, so which variable are you solving for?

@P_Sampras It can be done with pointplot3d if you include the style= line option.

@P_Sampras It can be done with pointplot3d if you include the style= line option.

Turtle? Do you have a LOGO interpreter written in Maple? If not, then you're going to have trouble with this code. Maple cannot interpret the Turtle commands and the Left, Right, etc. movements.

If your assignment was to use Maple to plot Koch's snowflake, then you should do a Google search "Koch snowflake Maple". I found several relevant pages.

Edit Update: Web searching makes me suspect that there is a LOGO interpreter for Maple, but I haven't found the actual package yet.

@vas9pupkin If it worked, it was because LinearAlgebra happened to be otherwise loaded at the time the procedure was entered into Maple (it doesn't matter whether it's loaded at the time the procedure is run). I assure you that with does not work inside procedures; this is discussed extensively on with's help page ?with.

I am not saying that using uses or :- instead of with will make your code work; that is discussed adequately by Markiyan and acer.

@vas9pupkin If it worked, it was because LinearAlgebra happened to be otherwise loaded at the time the procedure was entered into Maple (it doesn't matter whether it's loaded at the time the procedure is run). I assure you that with does not work inside procedures; this is discussed extensively on with's help page ?with.

I am not saying that using uses or :- instead of with will make your code work; that is discussed adequately by Markiyan and acer.

@vas9pupkin I should've notced this before.... The command with does not work inside a procedure. So the IsDefinite is not being done at all in your last error. You should spell out the whole name in your procedures:
 LinearAlgebra:-IsDefinite(...). (There are some other options also, like the ?uses declaration.)

@vas9pupkin I should've notced this before.... The command with does not work inside a procedure. So the IsDefinite is not being done at all in your last error. You should spell out the whole name in your procedures:
 LinearAlgebra:-IsDefinite(...). (There are some other options also, like the ?uses declaration.)

There are numerous subtleties involved with using the < > constructors, especially regarding the distinction between row vectors and column vectors. It is understandable that one would prefer not to negotiate those subleties. So here's two other versions:

Matrix([a[x+m..y+m] $ m= 0..2]);

(which only works if m is unassigned) and

Matrix(['a[x+m..y+m]' $ 'm'= 0..2]);

(which works even if m is assigned).

There are numerous subtleties involved with using the < > constructors, especially regarding the distinction between row vectors and column vectors. It is understandable that one would prefer not to negotiate those subleties. So here's two other versions:

Matrix([a[x+m..y+m] $ m= 0..2]);

(which only works if m is unassigned) and

Matrix(['a[x+m..y+m]' $ 'm'= 0..2]);

(which works even if m is assigned).