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:

Does anyone know if it is possible to use RegSubs within Maple TA?
For example

StringTools[RegSubs]("([0-9]),([a-z])"="\\1*\\2", "2x*3y");
 

cf  www.mapleprimes.com/forum/weird-regsubs

 

 

We have an assignment that is now "closed" so further student work on it is impossible.

We would like to extract final results, but can't force grade all the remaining assignments because a handful of students are logged on and so (even though they can't be doing this assignment), this assignments can't be force-graded.

Is there some way round this, or is this another design flaw and we just have to keep on force-grading until we catch them all offline?

Toby Bailey

 

How do I define an expression?

I have a system of two ODE's. One is of the form dT/dt=a*(dc/dt)-b, where a and b are constants. The other is of the form dc/dt=-(c^2)*d*exp(j*(1/T-1/k)), where d,j, and k are constants. I need to find the maximum value for T. I can solve dT/dt via the separation of variables method to get and expression T=f(c,t). I then substituted this expression into dc/dt=f(c(t),t) and solved it numerically in Maple. How do I substitute the values of c(t) obtained in Maple into T=f(c,t) and find the maximum? Or is there a better method?

I'm trying to use Maple to solve an ODE instead of using partial fractions.  I can't get the syntax correct.  The original problem is...

 

dC = C(1-0.0002C)dt        C(0) = 2   for t >0

 

I know it's seperable into

         dC             = dt

C(1-0.0002C)

 

I can't get anywhere to find an explicit form!  Any help is appreciated :D