how I can find solutions for non linear equations.

I want to find non zero solution.

thank you

ZAH.mw

Maple Worksheet - Error

Failed to load the worksheet /maplenet/convert/ZAH.mw .
 

Download ZAH.mw

I get this problem in a paper published in 2011. there is a table which compares the solution of a differential equation and gives the range of initial guesses. I got confused when saw maple and approximated maple, please any help me 

I'm attaching the link of paper. Please have a look at table 3. 

https://www.sciencedirect.com/science/article/pii/S0098135411000056

Hi, Maple is totally new to me and I found something confusing.

Here is what I have:

And it shows Error, invalid input: unknown uses a 1st argument, A (of type Array(numeric)), which is missing.

But in another similar procedure, I have exactly the same lines but it goes without error. 

I have no idea what is wrong with these 4 lines.

Thank you in advance!

If I add "restart" to a program, then interface(imaginaryunit=j) don't work. Why? 

***********************************
restart;
interface(imaginaryunit = j);
j^2;
************************************
The output is j^2  but the output should be -1. 

 

Dear all,
How can I input different spacesteps in numerical solution of PDE (Heat equation) with pdsolve of Maple?

For example, the x range is x=0..L,
and I'd like to solve the PDE with spacestep1=L/100 for x=0..a and spacestep2=L/10 for x=a..L.

Thank you in advance!

Hi,

How to generate the whole table of quantiles for a normal reduced centered N(0,1)?

restart;
Chargement Statistics
X := RandomVariable(Normal(0, 1));
                            X := _R
Statistics[Quantile](X, 0.1e-1);
                       -2.32634787404074

Hi,

Does maple have the ability to create probability trees / branch plots? (representing a sample space).  I would like to represent a problem more elegantly while learning how to use the software.  For example, a sample space that can be represented could be a coin toss.

Hi guys,

I have got serious problem with solving this system of ODE, where psi is equal to 10*sqrt(da) and uB,E,kL,uc are constants:

firstly I have to find missing initial condition using shooting method and calculate cA(z=2) using Runge-Kutta 4th order then. And plot following concentration profile for cA and dA. So far, I have dealt with first diff eq 2nd order dividing by two diff eq of 1st order using mentioned constants so I got these ones:

  dy[1]:=y2(z);
  dy[2]:=1.000000000*sqrt(y1(z))-6.000000000*y2(z)-10.00000000*y3(z);   
  dy[3]:=-0.8333333333e-2*sqrt(y1(z))-0.8333333333e-1*y3(z);
 

I understand I need a condition da(z=0) that I should obtain using shooting method, but I do not know how to do it in spite of I understand it in theoretical way. And same problem I have with RK4th order. Anybody here with a hint, please? 

There is my maple file (unfinished version of mine): maple-shoot_RK4.mw

Why Maple doesn't calculate this and only rewrites it??

with(inttrans);

invlaplace(exp((0.2500000000e-1-2.500000000*sqrt(0.116e-3+.8*p-3.2*10^(-10)/(p+0.2e-4)))*x)/p, p, t);
     
 

restart;
with(LinearAlgebra);
help("&x");
`&x` := proc (x, y) options operator, arrow; 2*x+3*y end proc;

`&x`(a, b);

[x[1], y[1]]+[x[2], y[2]];
                   [x[2] + x[1], y[2] + y[1]]
'&.':=proc(u,v)  eval([u[1]*v[1]-u[2]*v[2]],[u[1]*v[2]+u[2]*v[1]]  end proc:
Error, unable to match delimiters
Typesetting:-mambiguous(Typesetting:-mambiguous(primeampperiod

  primeAssignproc(ucommav)  evallpar(u(1)sdotv(1) - u(2)sdotv(2))

  comma(u(1)sdotv(2) + u(2)sdotv(1))  end proccolon,

  Typesetting:-merror("unable to match delimiters")))
&. ([x[1],y[1]],[x[2],y]]);
Error, unable to match delimiters
   Typesetting:-mambiguous(Typesetting:-mambiguous(

     ampperiod lpar(x(1)y(1))comma(x(2)commay)rsqbrparsemi,

     Typesetting:-merror("unable to match delimiters")))
f := proc (x1, y1, x2, y2) options operator, arrow; x1*x2-y1y2 end proc;
(x1, y1, x2, y2) -> x1 x2 - y1y2
f := proc (x1, y1, x2, y2) options operator, arrow; x1*x2-y1y2, x1*y2+y1*x2 end proc;
(x1, y1, x2, y2) -> x1 x2 - y1y2, x1 y2 + y1 x2

I am on a Mac and unable to login to MapleCloud. I can log in perfectly fine via the website in all browsers. Any solutions for this?

How to simplify

a*b=a*c

to b=c ?

Hi,

I try to simulate the sum of two dice, and display the frequencies of the apparitions (in order 2,3,..12). Is my approach good? can generalize the approch to several dices?

Thanks for your help

Simulation2Dés.mw

Hi every body:

How can I solve this equation with Trapezoidal Rule in Maple? 

u(x) = 1+int(x*t*u(t), t = 0 .. 1)

Tnx..

I have a procedure that changes the value of an input variable quite unexpectdly. Can anyone explain why? I have a very simplified example of this below.

restart;
with(LinearAlgebra):
switch := proc (V::Vector)
description "This procedure is supposed to take a Vector V and switch entries 1 and 2";
local W,a,b;
W:= V;
a:= W[1];
b:= W[2];
W[1 ] := b;  
W[2] :=a;
W
end proc;

V1:=Vector([1,3,5]);
V2:=switch(V1);
I have omitted the output for brevity's sake but all works well as expected.
However,
V1;

returns V2 not V1. Why is the procedure changing V1?
 

The problem occurs with matrices but not with lists.

Thanks.