Hello,
I am currently conducting a study on the bridges and I need to solve a partial differential equations. However, despite all my efforts

hi, i have solved my equations with dslove numeric,with 3 terms approximations,it takes maybe 5 minutes to solve it,when i increase 3 terms to 4,it takes more than a day to solve,however my queation is about another problem,
i solved my equations with 3 terms approximation (in 5 minutes),when i want to get answers , for the very little times (i,g=0.00001) it answer quickly,but now i am calculating it for  t=1 seconds and it takes more than 12 hours to answer and it...

Hi all,

For research purposes, I have symbolic matrices of dimentions up to 100 x 50 (and above) with certain number of parameters. Then giving random value to those paramters, I want the numerical rank of the matrices.

Maple 17 does not seem to work well with symbolic ranks, where expentials are involved.

And more to it, both

Student[MultivariateCalculus][Jacobian]

and

VectorCalculus[Jacobian]

does not seem to work. ...

I am new to Maple (converting from Mathcad) and I am having trouble with plot3d in Maple 17.  Even in the help examples the scale numbers next to tickmarks appear blurred.   In addition after a couple of rotations of the 3D plot, my computer freezes and has to be manually reset.   I'm using Windows XP with 4 GB of physical memory.   

Would appreciate any help.  

Thanks in advance.  

Dear Mapleprimes

I am working on getting the right angles for my gears to fit together. My problem is that my fsolve (at the bottom of the page) does not seem to work. Can you help me by telling me what I am doing wrong.

Hi

I want to allocate the result of "solve" command to a variable (array)

u := eval(solve({x-y = -1, 2*x-y = 3}, {x, y}));

                                                                     ...

By a straight forward calculation, one can check that the expressions

(2*delta^2-2*beta*delta+alpha^2-2*alpha*delta+beta^2)*N^2+2*gamma*(beta+alpha-2*delta)*N+2*gamma^2

and 

(N*beta-N*delta+gamma)^2+(N*(alpha-delta)+gamma)^2

are same and equal. 

How to get the 2nd expression from the 1st expression by simplification by using MAPLE. 

http://www.maplesoft.com/applications/view.aspx?SID=140702

I would like to pass this...

Hello I am working on a Physical Chemsitry problem and Am haveing trouble evaluateing a statistical mechanics approach to calulating entropy. I have defined a list Z that contains 12 values for a variable that is used to descirbe a state. The sum:

sum((ln(1-exp(Z[i]/T)),i=1..12)

is supposed to give me the entropy of a system with those 12 possible states (T is Temperature which is to be entered later) When i try to evaluate this (where the value that changes is defined by a list...

Howdy.........Is there anyway i can force Maple simplify the LHS to equal the RHS. I know the're equivalent, but the RHS is neater IMHO.

Hi, I was about to calculate the limit

limit(sin(x)+sin(y),{x=0,y=0})

and Maple 17 returns the same expression, with no answer.

What I am doing wrong?

As showed in attached file

the laurent series of exp(1/z) at z=1 is equal to the taylor series of exp(z) at z=1           

Hello every one, 

Here I will recall the PDE and its numerical solutiion provided by Maple help. 

PDE := diff(u(x,t),t)=-diff(u(x,t),x);

IBC := {u(x,0)=sin(2*Pi*x),u(0,t)=-sin(2*Pi*t)};

pds := pdsolve(PDE,IBC,numeric,time=t,range=0..1);

p1:=pds:-plot(t=0,numpoints=50):
p2:=pds:-plot(t=1/8,numpoints=50,color=blue):
p3:=pds:-plot(t=1/4,numpoints=50,color=green):
plots[display]({p1,p2,p3});

I want to export data...

Hi,

I posted a problem the other day to do with this specific problem and the issues got sorted out:)

The aim of the program is to find the catenary by iteration...

It's majorly diverging though and i'm not sure why.

Any ideas?

Thanks,

Rach

Trying_to_get_the_Ca.mw