Hi there,

 I have a piece of code that uses lists instead of vectors and recently, it crashed, it ran out of memory. Long story short, if I use vectors instead of lists, the performance is much better and optimal (this I knew but I was lazy to translate all my code). However, there's one single line that I cannot efficiently translate and it's the one that uses the function member(). Before, I had the following (it's an oversimplification of my code in order to easily discuss it in here):

In the name of God

Hello all,

Look at these instructions, entered in maple16(x64):

temp:=Matrix(25000):

--- Up to now, about 5 Gb's of my 8Gb memory is occupied and no problem

unassign('temp');

gc()

temp:=Matrix(25000):

Error, (in Matrix) Maple was unable to allocate enough memory to complete this computation. Please see

hello i am using maple and i really like it but one part about it that i do not like is the following:

• the program forces me to use the mouse. it makes me point and click as if I'm a little child and I find this very degrading. Please help.

For example, how do I perform "insert maple input after the current execution group" with the keyboard? And how do I find/configure other keyboard shortcuts? Thanks in advance.

Hi,

Recently, I upgraded from Maple 13 to Maple 16.  I have been using Maple for 20 years --- Maple V Release 2 (1992) through Maple 16 (2012), and I participated in beta testing Maple V Release 4, which developed what we now call the Classic Interface.  The Classic Interface is amazing --- it was better than Mathematica in 1994 and it is still better than Maple's Standard Interface.  The Standard Interface is missing features that were...

1. a)given ∫(0..4)∫(√x..2) of sin(pi)*y^3 dydx, graph the region, R, in the xy plane.

b)Write double integral which reverses the order of integration and then evaluate.

2. Find centroid of cardioid of region enclosed by cardioid r=1-sin(theta)

3. a)Graph wedge cut from cylinder x^2+y^2=9, and by planes, z=-y, and z=0, and above the xy plane.

b)Write the integral which finds the volume of the wedge and evaluate it.

Will an older version of AEM (e.g., AEM 14) run with a newer version of Maple (e.g., Maple 16)?

Hi all,

Is there a quicker way to find all unknows from an expression?

unknowns.mw

Say I want a list contains ALL parameters. In this case, it would return

[w1,w2,mu,tau[2],tan[3],tan[4],eta[1],eta[2]]

Is there a way to do this?

Thanks!

Casper

As an intermeditae result I get from maple

It is obvious, that two fractions can be reduced by (1-t).

I could not reach this with simplify, solve, factor, expand, ...

Any idea?

In addition in the numerator (1-t)^2 is possible. How do I get this?

Thanks for any help !

Hi all,

I have a little problem.

I need to let maple solve: int( diff( u(x), x$2) * v(x), x=0..1), where u(x) and v(x) are arbitrary single variable real valued functions. Moreover Maple should consider v(0)=v(1)=0 while doing integration.

Maple is returning the integral as it is. I think some how I need to force maple to use integration by parts but do not know how?

I know maple knows: int( diff( u(x), x$2), x) = diff( u(x), x)

test.mw

Hi all,

Here is the problem, I will try my best to describe it:

Firstly of all,

log(p[j,c]/(1-p[j,c]))=mu+tau[j]+eta[c];

In this system, the 'j' is a time varying parameter, and the...

the eight digits of your student Id number are used to individualise the questions. they are labelled a1a2a3a4a5a6a7a8a.. all non interger outputs should be to 3 decimal places. question 1_ depending of your own value of a8, write a program that performs the calculation below:

a8             ...

I purchased Maple 12 some years ago and I never used it. I want to download it to this new laptop and don't know how

Hi, I need help with graphing a certain logistics population model for an initial population size that is equal to 1.

dy/dt = k(1 - y/M)y  k=2 M(t)=10e^-t/5 +3(1-e^-t/5)

So far I've worked out the values to input, but I don't know how to write it in Maple.

I know all I have to replace is the M in the dy/dt equation with these 2 values.

M(0) = 10

M(t goes to infinity) = 3

Dear friends,

I have a basic question concerning Maple 15 (X86 64 LINUX). In fact it is so simple it is almost embarassing! Here it is.

When we do integration in a basic calculus class we learn that when integrating polynomials and series the constant that appears during the integration is usually taken to be zero, as polynomial and Laurent series terms will only produce powers and logs, but no constant. Of course the choice of constant does not influence definite integrals, as it cancels.

i want to solve this system of equation in analytic way in maple.

sys[Dx(t)+.01(.1x(t)+.1)^2*a+.01*.03*y(t)(1+x(t))*b+.02*.01*c*(z(t)+5)*(x(t)+1)=0,Dy(t)++.01*.03*y(t)(1+x(t))*a+.01*.09*y(t)^2+.01*.06*y(t)*(z(t)+5)c=0,Dz(t)+.02*.01*a*(z(t)+5)*(x(t)+1)++.01*.06*y(t)*(z(t)+5)*b+.01*.04*(z(t)+5)^2*c=0]

in this system a, b,c are costant