Hello,

 

this is probably a silly problem but I really didn't find any command for it.

Suppose I have a matrix and I want to remove some rows and columns to consider a smaller matrix within it. Is there a nice way to do it?  This is what I came up with:

restart;with(LinearAlgebra);

 

A := Matrix(3, 3, [[1, 2, 3], [4, 5, 6], [7, 8, 9]]);

 

temp := <(Column(A, 2)| Column(A, 3))>; result := <Row(temp, 2), Row(temp, 3))>;

 

Surely there is a better way to do this?

hi all,

i am quite an unexperience user so the solution to my problem might be obvious to you... i googled for a while and couldn't find anything regarding this matter.  i just want all my plots with maple to use the exponential notation on the y-axis. from what i've observed maple does that when values are on the E-6 regime or smaller, greater numbers are just written out which looks just ridiculous (e.g. .0005 -  i want 5x10^E-4). so is there a way to fix this, set some parameter that would force maple to use the exponential notation from earlier on?

Dear all,

I have used Maple to solve a system of equations. The result involves the variable _S01. Does that denote any (real?) number? What's the difference between _S01 and _Z01?

Thanks in advance

I need to create a magic square of order n=4 using a Matrix.

I have tried many linear equations system. Got me nowhere so far.

Hello! I have a problem in Maple 11 when I try to plot some functions in log log scales. It seems that maple doesn't calculate enough points for low x values because it draws curves with elbows even if they are differentiable. And the curves have very weird comportement for a sum of exponential... I tried to do it mannually (takin the log of the function and replace x by 10^x) but it's no better. It would certainly be clearer if you could see what I am talking about: is there a way I could attach my workwheet (or a screen shot) to the message? Thanks

I told maple to evaluate "limit (cos(1/x) , x =0, right)" and got the result -1..1  Does this mean that the limit evaluates to the interval [-1,1]?  If so, I am not sure that is what I wanted because the limit must be defined about a point.  If maple is calling an auxillary routine to let me know, hey there is no limit, but at least it is bounded by [-1,1], then I guess that is fine, except it would be nice to know that.  Or am I just missing something all together?

I'm having a problem with the palettes on Maple 12. Some of the fonts for the symbols are small, while others are large. For example, my integral symbol is about size 12 font, while my definite integral symbol is roughly size 18 font. Any suggestions on a fix? I'm running Maple 12 academic version on a Macbook Pro with Leopard. Here's a screenshot so you can see what it looks like. The font is way too big, any way I can make it smaller? http://i224.photobucket.com/albums/dd177/wifflestheevil/Picture2-1.png

Hi,

Two quick questions:

1. How do I permanently delete a class from Maple TA, i.e. so I won't be able to restore it?

2. If I have created a class that has a parent class. How do I remove the parent class dependency.

Thanks

Colin

Hi,

I have created a some assignments in one class and wish to move/copy them to another class. How can I do this?

My class structure is:

• Class 1
  • Child class 1
• Class 2

I want to move assignments (not just the question banks) from child class 1 to class 2.

Cheers

Colin

I have a small problem.
I'd like to plot 2 functions in a graph and be able to hide a function for a particular part of the graph.

The functions are:

f:=t->3*t-t^2 and g:=t->2*t
When i plot these functions, I would like to hide the function f(t) for f(t)<1 and I'd like to hide g(t) for g(t)>1.

How can this be accomplished?

Thanks in advance!

 

 

In our assignments students may may make the questions and grade four times (the number of attempts is set to 4). Unfortunately the review feedback button has disappeared, so that students are not able to know which questions were still incorrect.

The policy is exactly the same as in previous assignments and in those the review feedback button always appeared.

Does any one know what is wrong, and more importantly how can I correct this problem?

kind regards,

Harry Garst (troubled instructor)

 

Hi

I use a loop to fit a model to several different datasets, loading and storing for each dataset several matrices and graphs. It seems that the calculations get slower and slower the more the loop progresses and sometimes the run just crashes. I assume this is due to the large amount of data stored in Maple's memory. Is there a way to empty the memory after I've exported or saved the matrices or graphs?

Thanks, Marjet

Does anybody happen to know how to get maple to do something of this form:

evalf(Int(fsolve(f(x,t)=0,x),t=0..1)).

I get the error message "Error, (in fsolve) t is in the equation, and is not solved for" .

Thanks

Is that a bug?

For example, a simple expression like so ...

a:=b=3*x+5;

solve (a,x);  will return solve (b=3*x+5,x)   Not exactly what one was looking for.  Removing the space, solve(a,x) and now it will work exactly like you wanted it to. 

I can't recall wether I read somewhere that spaces weren't allowed.  That true?  Or do they need to brush up on the next update?

 

 

Hi all,

I have the following: