MaplePrimes Questions

how can i use maple without the interface?

i mean.. i have to use maple in a remote pc and the connection is a problem it become slow

thanks matteo

I need mentorship and material that is going to assist me in how to use maple.

Greetings to all,

hi, i'm using an existing Maple mws that was created by some unknow version of Maple. the Maple text is show below, and the old result is the last line (0.28031703) restart; T := ->(1/8)*sqrt(x^2+225)+(1/3)*sqrt((20-x)^2+625); dT := D(T); solve(dT(x) = 0, x); evalf(%); Sols := %; Xbest := Sols[1]; solve(25/(20-x) = 15./x, x); T(%)-T(Xbest) 0.28031703 when i run in with Maple 12 Student Edition, the result I get is 11.41326364-(1/8)*sqrt(13.51659367[1]^2+225)-(1/3)*sqrt(1025-40*13.51659367[1]+13.51659367[1]^2)

I've just installed Maple 12 on my machine running Suse 10.0, under which Maple 10 ran with no problems.  But I have two problems here: even on a newly opened worksheet, in a newly opened Maple, a simple command, such as

f:=x/(x^7+1);

takes several seconds to "evaluate", while the screen goes completely blank.  The problem is even worse if the evaluation is a difficult problem.

 

What seems to make it worse is if I've read in some Maple files before with

read("myfile.mpl");

I'm a primer in Maple, My problem is that I want to solve this PDE system.

PDE:= [diff(u(x,t),t)= diff(v(x,t),t,t) + u(x,t) - 1/3*u(x,t)^3 -v(x,t), diff(v(x,t),t)=u(x,t)-v(x,t)];

IBC :=  {u(x, 0) = tanh(x), v(x, 0) = 0};

pds := pdsolve(PDE,IBC,[u,v],numeric);

This gives me this error.

Error, (in pdsolve/numeric) initial/boundary conditions must be defined at one or two points for each independent variable.

 

I'm trying to create a football-shaped object by rotating an arc of a circle about a line.  Is there a way to define an arc in Maple?  I've been using the 3D Geometry package but I can switch to another if I need to.  I know I can calculate the arc length, but is there a way to define the arc itself as an object?  Eventually, I'd like to have the rotation of the arc and find the intersection between the rotation and another line.

Thanks for your help,

Michael

To all,

I am trying to carry the units through an engineering calculation; however, after loading the Units package and specifying the 'FPS' system I am not getting the results I expected.  Most likely I am at fault - syntax, format, etc. - so I have attached the worksheet in the hope that someone can diagnose the mistake (it starts in the Example 1 section).  Thank you for your assistance.

Hi

I noticed that the java virtual machine that comes with MAPLE is behing the current JVM which is installed on my system. Is there a way to make maple use my current up to date version instead of its own obsolete version ?

Hi all

I have trouble extracting components from of  equation solutions:

p1 := x^2+y;

e:=solve({p1}, {x});

                                         e := {x = sqrt(-y)}, {x = -sqrt(-y)}

next I used rhs() to extract right component of the first solution

x1 := rhs(e[1]);

but I got the error:

It's a simple equation where I'm just getting maple to run through the steps.

eq:=(m+M)=a^3/P^2; 

solve(eq,P^2);   returns an unexpected error

I wanted to see if maple could solve for P^2, poking here and there seeing what does and doesn't work.  I know I could just type it in, but can Maple do this?  Maybe I'm missing something.

I am using Maple 12 build 347164 for research (as a grad. student) on Windows XP.

I have written a simple block of code to do some calculations repeatedly.  However, everytime I run the code, the amount of memory Maple is using increases (3-4 MB per time).  I am simply running the code again, and the size blossoms.  I have made sure that none of my variables are expanding (e.g., a list that isn't cleared).  This is troublesome because after 30-40 runs Maple is using over 800MB and my computer has only 2GB of RAM.

How do I enter this problem in Maple 12? I have a few like this and need to knwo how to input the equations.

1.)  Find the slope of the tangent line to the curve y=x^3+3x-8 at (2,6)

2.) The tangent line to the circle y=x^3 -6x^2 -34x -9 has slope 2 at two points on the curve. Find the two points.

3.)Find the slope of the curve y=x^5 at x= -2

i have Maple 12 Student edition. when i do a 5th intergration, and eval at Pi, i get a complex answer. how would i get it to display a rational answer ? h := t-> (1+t^3*cos(t))^(1/5); ((D@@5)(h))(Pi); evalf(%); simplify(%); -.1245723200-0.905070854e-1*I D1 := D(h); D2 := D(D1); D3 := D(D2); D4 := D(D3); D5 := D(D4):fsolve(D5(Pi)); -.1245723200-0.9050708540e-1*I thanks
I'm trying to eventually make some 3d plots of some finite fields and different operations on them. Unfortunately I need some way to restrict the input to integers since apparently floor-ing them isnt enough. Heres parts of my worksheet, if it helps: G := GF(2, 8, x^8+x^4+x^3+x+1) `&*` := proc () options operator, arrow; G:-output(G:-`*`(map(G:-input, [args])[])) end proc f[1] := proc (a, b) options operator, arrow; `&*`(floor(a), floor(b)) end proc > plot3d(f[1](a, b), a = 0 .. 255, b = 0 .. 255); %;
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