> restart; with(DEtools); with(PDETools, declare); declare(diff(y(x), x), prime = x); [declare] y(x) will now be displayed as y derivatives with respect to x of functions of one variable will now be displayed with ' > dsolve(diff(y(x), x) = -(2*x-1)/(3*y(x)+7)); (1/2) 7 1 / 2 \ y(x) = - - + - \49 - 6 x + 6 x - 6 _C1/ , 3 3 (1/2)

Suppose I have the following in my worksheet > a:=17 > expr1 := a^2 +4: > expr1 293 > a:= 0: > expr1 293 Its clear what's happening - expr1 was defined when a was 17 and it doesn't change just because later I change the value of a. I understand that after I set a equal to 0, if I had moved the cursor up to the line where expr1 was defined and pressed the ! button the value of expr1 would change to reflect the new value of a. My question is, is there any function in MAPLE such as redefine(expr1) which will in effect move the cursor to the line on which expr1 was defined, press !, and then move the cursor back to wherever it was?

Hi there, I've just started using Maple, and must say it is a real good tool - powerfull!!! But to the point, I have created a 'simple' procedure for determinig the shape of UMP Unbiased test for testing H0: the probability 'p' of getting "1" in the Bernoulli scheme is

I, i need to plot a z-trasformed function (discrete function), that has some "Dirac" (isn't a real Dirac function) points. How I have to do? This is an example: f:=1/2*(charfcn[2])(k)-3/4*(charfcn[1])(k)-3/8*(charfcn[0])(k)+3/8*2^k;

How do I plot a scatter plot with a vector x and a vector y, and a function y = cos(x).... on the same axes? Please Help!!!!

Hi Short question version: ss := ["abcd", " efg", " hijk", " lm_r", " stuv_k"] How can this be converted to: ss := [abcd, efg, hijk, lm_r, stuv_k] (ie just remove the quotation marks.) Thanks David Longer version: This was meant to be a reply to a previous question posted about 2 days ago, but I have failed to find it. (Sadly I have failed in my attempt to answer his question anyway.) No doubt my lack of being able to successfully use the sort features - are they working properly? (They just seemed to be in a different random order?) restart: ss:="abcd # efg # hijk, lm_r, stuv_k":

So you have used Maple as a glorified calculator (Maple 101), then wrote a few 1 liners (Maple 201), and even a few larger procedures (Maple 301), where you were both amazed and horrified by 'op'. But when you get serious about programming in Maple, even for not-so-large procedures, what are the fundamental parts of the system that you should know? Other pages in this book talk about particular features. This one is instead a simple list of those Maple commands and concepts you need to know to be able to call yourself a Master Maple Programmer.

I'm having a problem to convert my answer to radical term. I've use 'convert' command' but Maple doesn't work. Thank you for your help. >solve({a1^2*alpha+a2^2*beta=a1, 2*a1*a2*alpha+a2^2*gamma=a2, a1*b1*alpha+a2*b2*beta=b1, a1*b2*alpha+a2*b1*alpha+a2*b2*gamma=b2, b1^2*alpha+b2^2*beta=a1+b1, 2*b1*b2*alpha+b2^2*gamma=a2+b2, a1*b2<>b1*a2},{a1,a2,b1,b2}); >convert(%,radical);

Hi, I am having problems with a slow procedure for doing a large number of recursive calculations. Here is the code: g_exp := proc(u,t,lambda,beta) global k, g, f, d, i, t1, sum2, j: g := array(0..u+t): f := array(0..u+t): g[0] := evalf(exp(-1*lambda)): f[0] := evalf(1-exp(-beta*(0.5))): for k from 1 to (u+t) do f[k] := evalf((1-exp(-beta*(k+0.5)))-(1-exp(-beta*(k-0.5)))): g[k] := evalf((lambda/k)*sum(i*f[i]*g[k-i],i=1..k)): end do: d := array(0..u+t-1,1..t); d[0,1] = evalf(g[0] + g[1]); for i from 1 to (u+t-1) do

In my worksheet I have a variable Q which has a value of 0.000002859716408. I am in a document block and type The value of Q and then I press ctrl= and the line reads The value of Q = 0.000002859716408 But what if I had wanted the value to be outputted in scientific format, e. g. The value of Q = 2.85972e-06 Is there any way I could have gotten this output ? Thanks

It's according to my project, again. I want to plot a pentatope (4-simplex) with Maple. I've tried using plot3d with animate but it's look doesn't work. Thanks for your help.

A couple of question on the following snippet.

How do I find critical numbers of a function or graph, such as the function, f(x)=abs(x^3-2x^2+1) ???????? Please help me

Hi, how do I plot something of the form x+y+z=3 for a range of x,y,and z? I thought this should be a simple 3d plot, but I haven't been able to figure it out. Thanks ahead of time.

Because my ISP no longer offers home pages, I'm putting the source to maplev-mode here.

maplev-mode is an Emacs major mode for developing Maple code. Its features include:

• font-lock (highlighting) of Maple keywords
• automatic indentation
• syntax checking (via Mint)
• online Maple help
• online display of Maple procedures
• imenu support
• auto-fill support

It works properly with NTEmacs on a Windows machine and with GNU Emacs on a Linux box. It has been tested with GNU Emacs 21.2. It is supposed to work with Xemacs but the testing done with Xemacs has been minimal. The manual is badly out of date.

The current version supports Maple 11 and previous releases of Maple.

I use a dark background, but the maplev-mode can be configured to use a light background. Clicking on the highlighted "on line 13" message in the mint buffer moves the point to that location in the source buffer. Download 84_maplev.zip
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