MaplePrimes Questions

Whenever I try to plot a simple/small function in 2d, Maple literally takes forever to calculate it whenever the frame rate is too high.

For instance, the following command (from a tutorial, so it should work):

animate( plot, [exp(-x/5)*sin(x),x=0..t], t=0..20, frames=100 );

Will not compute, unless i change the number of frames to 50 or below.

I tried this on a friends computer (he has a mac, but has way weaker performance) and it worked just fine.

Hi,

 

I was wondering if it is possible for me to generate plots from command-line Maple. What I need to do is access a linux server remotely via PuTTy and then set Maple running on creating a plot (that takes it a couple of days). Is it possible to do this?

I can't seem to find out how after googling for a while, I was thinking it would be something like "maple <inputfile.mpl> outputfile" on the command-line then I'd just let it go and it...

Hello,

To label plot axes as Greek letters, one should use the "labelfont=[SYMBOL]" parameter, but this option makes both axes in Greek letters. Is it possible to make only the horizontal axe as a Greek letter, while the vertical axe remains as an English word?

Thanks in advance.

I have a procedure, lfGn, with two or three real arguments, and I wish to find the maximum value of the procedure.  I was trying the Optimization package, and found this to be extremely slow.  Optimization was called with the following code: the first few lines just set some variables, for use in the last line, which does the call.

max2lfGn := proc (X::Vector) local a, d, e, f, H, m, s;
e := 10.^(1-floor((1/2)*Digits));
a:= Statistics:-Mean(X);
d := Statistics:-StandardDeviation(X);...

Mazimize only gives me the first maximum it finds. I want to find all maximums in an interval, or just the largest NUMERICALLY. is there a workaround?

I should convert factors of a generic equation into standard form (scientific notation) :

 

 example_eq := 345.1234 x1(t) + 34.5691 u1(t) - 5423.8932 y1(t) + ... many other terms...


Is there some maple command or procedure to convert automatically every factor of a generic (very long)   equation ?

 

Manipulating a system of long equations maple gave in output the following error message:

I have a function in maple with one variable (say f=2*x). I would like to generate a nx2 matrix with the variable (x) in the first column from 0 to 100 and the function value (f) in the second column. I would then like to export this numerical data. How can I do this in Maple?

Problem exporting labels.

 'labeldirections' = [horizontal,vertical]

displays properly inline, but the labels vanish when exported.

 'labeldirections' = [horizontal,horizontal]

doesn't work either, but if omitted altogether the labels are properly exported with plotsetup(ps)

So we've also lost the ability to export vertical labels.

Based on the dates of some plots I produced in earlier work, it looks like some export...

sc_vs_t.mw

sc_vs_t.pdf

 

I want the solution of an ODE for different values of d say d=3,4,5,6... etc (see the mw file). I want to plot a(t) vs t for these different values of d.

Now what is wrong with my code ?  How to fix it ? 

I also  added a Mathematica work of the same thing (see the pdf) ,...

Dear guys, Can anyone tell me why my program does not work for some initial values? All my equations are:

> alpha := (6*h^2)^(1-n)*(1-k)^(1-n)*((1-m+k)/(2*n-1-k));

> eq := z-> 1=(m*(1+z)^3-k*(1+z)^2)*h^2/(H^2)+(((2*n-1)-(k*(1+z)^2*h^2/H^2))*((1-m+k)/(2*n-1+k))*((((H^2/h^2)-k*(1+z)^2)/(1-k))^(n-1)));

> Y := z->if not type(z,numeric) then 'procname(z)' else (fsolve(eq(z), H=h)) end if;

> l := dsolve({D(L)(z) = L(z)/(1+z)+(1+z...

lets say I have the folowng

a:=1

b:=3

c:=5

is it posible to have it like this

h:=a+b*c=1+3*5=16

hi I'm new to maple and I want it t perform some filtering

I want it to select a nummber in array within given condiitions

> t := [1, 4, 9];

>

> for i from 1 to 3 do if t[i]>2 and t[i]<t[i+1] then  s:=t[i] else s:=t[i]+7end ;
print(`output redirected...`); # input placeholder
Error, unterminated loop
Typesetting:-mambiguous(for i from 1 to 3 do  if t(i)gt2  then s

I have a function with one variable which I would like to plot the Kurtosis (statistical term) of (for a specific range). The purpose is to produce a plot which will show the 'peakiness' of the curve.

Say y = x^3 + 2*x^2 + 3*x;

For the range, say x = 0..10, I would like to plot the kurtosis (Maple function is also called Kurtosis). I have been able to do this numerically with a matrix of data but am unsure how to do this in Maple.

Your assistance is much appreciated.

Hi, 

I am relatively new to Maple and I am seeking an efficient way to create a probability histogram for a discrete probability distribution. For example,

x:      1     3   5    7

p(x): 1/8 1/4 1/2 1/8

 

I would like rectangles with height corresponding to the probabilities with bases centered at each x value, allowing for the possibility of gaps in the distribtuion.

 

What is meant by events? I have seen this error numerous times.

   "Simulation problem: maximum number of event iterations reached (100) at t= ...."

How do I model so that I can avoid them?

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