So I write this as a function:
zurflu14 := t->A*exp(-k*t);
now I want the same thing with the derivative but doesnt seem to work..
dzurflu14 := t->diff(zurflu14(t),t);
I have tried it many ways, what am i missing? I want the same functionality to evaluate at any value.
Thanks in advance!

I am having a problem using fsolve. When I input the command it just spits it out right back at me almost exactly how I typed it in. I have come across this before and I just started over but I have been working on this worksheet for hours, can anyone help?

(Sorry, this is reposting my earlier question that was submitted into a wrong place.)
I want to (triple)integrate f(x,y,z):=7z on the cylinder
x^2+y^2<>

Is possible to create literal subscript in atomic form without mouse??
In particular I need to create variable names with subscript in an automatic procedure, so I cant use the mouse (Convert To - > Atomic Identifier).
Thanks!

How do I lock plots so that every time I execute the document the plot won't revert to default settings?
Thanks
Dgiznya

Hello Maple experts,
lets assume I want to minimize some complicated objective function (procedure) objective(x1,x2,...,xn) with many problem variables. In order to use Maple's Optimization package, I have to specify all the arguments of my objective function in the form
```
objective := proc(x1,x2,...,xn)
...some complicated computation...
end proc:
```

However, this has to be written manually and for many variables, say 100 or 150, this is not very elegant. Isn't there a more elegant way of creating a procedure that is suitable for the Optimization package or the Global Optimization Toolbox?

limit
x extend to 0 cosx-cos11x\cos3x-cos7x
pls solve.

Is there a way to generate 256 equations of the form

Eq256:= {e1>0,e2>0,e3>0, e4>0,e5>0 e6>0,e7>0,e8>0}

Eq255:= {e1>0,e2>0,e3>0, e4>0,e5>0 e6>0,e7>0,e8<0}

.

.

Eq1:= {e1<0,e2<0,e3<0, e4<0,e5<0 e6<0,e7<0,e8>0}

Eq0:= {e1<0,e2<0,e3<0, e4<0,e5<0 e6<0,e7<0,e8<0}

The < can be thought of as a binary 0 and the > as a binary 1 so there are 2^8 equations.

I want to call a procedure that does the above with something like

For i = 1 to 256 do

eq:=getequ(i):# getequ:=proc(i) returns the automatically generated equation

LinearUnivariateSystem(eq,x);

end do;

I can do it all by hand but what a pain.

How do I find a point in every region defined by a system of linear equations?
I have a system of eight linear equations of the form
Ai.x+Bi.y=0 (i=1..8)
Ai and Bi are numerical values.
If I plot all eight equations on one graph then I get numerous bounded regions defined by three or more of the equations and numerous unbounded regions defined by two or more of the equations.
(It is possible – though unlikely - for two of the solutions to be parallel or collinear. )
My aim is to find one point – any point does - within every bounded region and one in every unbounded region. It is easy to do this by inspection.

I am coloring the xy plane, by using a procedure(x,y) to assign color.
The procedure returns a number and color is assigned according to that number.
It works fine but I really want some of the points to be colored BLACK.
What numerical value do I use for BLACK? WHITE?

How do circles centered on the origin in the z-plane transform for ?
(a)w[1](z) = z + (1/z)

I am currently running a procedure that is taking up a lot of time in maple, I do not really need the whole output and would very much like Maple to run just for a set amount of time and output what it has done so far, how would I go about doing that?

Hi I can't find the error in this procedure that i have made , to calculate the maximum and return it for a particular function
here is the code :
mymax:=proc(h1,a1,b1) local t1; local maxi; maxi:=0; t1:=a1; for t1 to b1 do if h1(t1)>=maxi then maxi=h(t1); t1:=t1+0.1; fi; od; maxi; end;
h1 is the function
a1 and b1 are the [a1,b1] limit of the interval
Can you help me ;
thank you

I wonder if there are interesting newsletters and magazines (or even journals) devoted immediately to Maple using/programming. This link http://web.mit.edu/maple/www/plibrary/mtn.html
seems obsolete; can anyone help me create a list of useful subscriptions, RSS feeds included? Thank you all in advance.

In previous versions of Maple there was an abort/interrupt capability-one could hold down the command key and a period at the same time and eventually Maple would stop the calculation. (Mac worksheet interface). Now there is an interrupt icon which is frequently ignored by Maple. I am currently in an ∞ loop and cannot get out! Help!