Hi everyone 

I want to solvethe following  differential equation system:

> equa1 := c[pa]*L*(diff(T[air](t), t)) = h*(T[sol](t)-T[air](t))+L*L[vap]*(diff(m[v0]-709.2750000*M*exp(1.000000000*10^(-8)*(1.311709131*10^9*T[air](t)-4.892675059*10^11)/T[air](t))/(R*T[air](t)), t));
> equa2 := c[ps]*l*(diff(T[sol](t), t)) = h*(T[air](t)-T[sol](t))-exp(-opt*L*(m[v0]-709.2750000*M*exp(1.000000000*10^(-8)*(1.311709131*10^9*T[air](t)-4.892675059*10^11)/T[air...

Hi guys,

i solve the equations of motion for a triple pendulum(Eq17,Eq27,Eq28). After that, I applied numerical values and initial conditions to solve these equations numerically. But unfortunatially i get the following error.

> g := 9, 81; l[1] := 5; l[2] := 3; l[3] := 1; m[1] := 5; m[2] := 3; m[3] := 1;
> ini := `ϕ`[1](0) = (1/3)*Pi, (D(`ϕ`[1]))(0) = 0, `ϕ`[2](0) = (2/3)*Pi, (D(`ϕ`[2]))(0) = 0, `ϕ`[3...

hello,

after defining N_1 N_2 and N_3 with long numbers, and defining M by N_1*N_2*N_3 i tried to step backwards.

By entering something like: M/N_1 (what is exactly like N_2*N_3) it does not show me full numbers, but instead 1/something*M.

After refreshing M and afterwards refreshing M/N_1 it totally worked out and showed me the product of N_2*N_3

Now my question is: how can i prevent this odd display format without refreshing everytime? (i tried...

I want to solve the inequality log[3](5*x+1)/(log[3](7*x-1)^2) <=0. I did

A:=log[3](5*x+1)/(log[3](7*x-1)^2):

solve(A<=0,x);

I got solution is x = 0. But this is a wrong anserw. Please help me. 

Another way, if i solve  the inequality log[3](5*x+1)/(log[3](7*x-1)^2) <=1, i got Warning, solutions may have been lost. Please help me.

hello all,

I work on an equation that represents the profit on a given horizon (L), according to three parameters (P, W, theta), and i want to find the triplet that minimizes this function. I even try to make a loop on the three parameter to find the minimum, but Maple does not give me a numerical result. Below is the function that I want to minimize (Prof(P,W,theta)):

restart;

beta:=1.2;

L:=2;

Q := t -> 50000/(2+23*exp(-120000*(W+1/10)^(1/10)*t/P^2)); ...

Hi dear friends

I want to solve this equation with the foloowing boundary conditions with maple. please help me to solve it

The nonlinear equation is:

 F' ' ' +27*F*F' '=0

And boundary conditions are:

 F' (6)=0.148

 F' (-6)=0

 F (-6)=0

thanks for your attention in advance

hi

when i copy my results in excell or notepad, they are in the following format

Question 1:

Once using Phyics, i copy to notepad become the following, how to make it become normal syntax such as a+b*c

with(Physics):

Physics[`*`](Physics[`*`](Physics[`*`](Physics[`^`](v(t), 2)

ex := {v*t...

Question 2:
forget how to make some patterns in terms of x1, x2

for example would like to make repeated x/(x+1) to be replaced by x1

I have been unable to get Maple Player to perform as I thought it would.  Actually I can only get it to work with the default functions.  Anytime I type in a function I get the following error message: "There was an error trying to generate the plot." or "There was an error during the differentiation of the input function." or "The input value "x

²

+4x+2" should be an algebraic expression." or "There was an error during the execution of finding the root."

similar to

http://www.singular.uni-kl.de/Manual/html/sing_951.htm
http://www.singular.uni-kl.de/Manual/html/sing_753.htm

i would like to find all modules in the complex
for example

0 -> A -> B -> C -> 0

would like to find B and C if know A

which book describe this algorithm for polynomial system

I am just a Newbie. Today I calculated a double integral using Maple 14 for linux amd64, but the results are  so strange that I think there must be something wrong.  I using two methods, the first is by using int(int(Integrand, inner variable), outer variable), the second is by calculating the inner integral first, then calculating the outer integral step by step.  But the two result are different.  Here is my codes: 

restart;
assume(a>0):
Int(Int(rho^2,rho=0..a*csc(theta...

Hi dear friends

I want to solve this equation with the foloowing boyndary conditions with maple. please help me to solve it

The nonlinear equation is:

 F' ' ' +27*F*F' '=0

And boundary conditions are:

 F' (infinity)=1

 F' (-infinity)=0

 F (-infinity)=0

thanks for your attention in advance

Mapleprimes.mwHi all,

I am trying to use Matrix values in the equation,  I am trying to pick each value from matrix C1 and C2 add them and use them in equation to find B2x.  I am attaching my file for your kind consideration.

Looking forward to kind replies

Regards

A.Q

I am trying to run Maple using a shell script that run from the terminal. 
I used the command: "maple -q -w0" but it does not work and I get the message "maple: Command not found."

I think Maple is not known to the shell that i am running. What should I do to make it work?  

I have a problem that I thought could be easy to solve it but I couldn't.  I'm working in wave propagation in random media and I'm trying to create a routine to solve problems using Karal's and Keller's approach, it consists in transform a differential equation (describing the form of a wave) with random coefficients over a parameter into an integro-differential equation over a mean wave (a plane wave solution that produces a dispersion’s relation taking into account the randomness of the media...