See my code:

----------------

restart;

with(plots); with(PolynomialTools); with(LinearAlgebra);

f := (x, y) -> ((2*x^2+y^2*(x^2*(-2+sqrt(1/x^4+4/(x^2*y^2)+4/y^4+4))-1))/(4*x^2-2*y^2+4))^(1/2) ;

g := diff(f(x, y), x);

plot([g(.1, y), g(1, y), g(3, y)], t = 0 .. 10);

-----------------

Here is error message:

Warning, unable to evaluate the functions to numeric values in the region; see the plotting...

I did not come across with a sorting algorithm animation that allows me to enter my own data, so I decided to write one in Maple.

In this worksheet, you can create an animation on sorting the integers that you have entered. If you let the worksheet to generate the data for you, you can specify the sortedness of the data. This feature allows you to visualize how some algorithms perform better or worse on data of a certain characteristic: The time complexity may not be...

Hi.

I can explain my question on the simplified example:

sol1 := dsolve({diff(x(t), t) = x(t), x(0) = 0.0}, numeric); 

func := q -> op(2, op(2, sol1(q))); 

dsolve({diff(z(t), t) = func(t) * z(t), z(0) = 0.1});

But i take a throw. It is clear, because, I try to call op(2, sol1(t)). Which way I whould use to solve my problem?

Dear everyone,

  Hello,

  I have a stupid question. From

http://www.maplesoft.com/support/help/Maple/view.aspx?path=examples/string

  There are many examples about "" '' `` related to character string (let me call it in this way for a moment )

  Actually what is the precise difference between these symbols?

Thank you very much in advance

with best regards

Dear everyone,

  Excuse me, I made some editing work witn the result of maple in editplus, then copy the editplus result to maple. Then I received several ">"

E.g.

f1:=2;
f2:=3;

copy to editplus then copyback to maple, it becomes

>f1:=2;
>f2:=3;

I have to "shift+enter" in maple to create new lines without ">", then copy the content of one line with ">" to the new created line without ">".

Hi I have a problem with the resolution of an equation. When I tried to solve it it returns "solutions may have been lost"... Here is the problem:

restart:with(Statistics):
> x:=rand()/10^12;

                               197859430267
                          x := ------------
                               500000000000

> X:=RandomVariable(Gamma(2,4));

                               X := _R

> XL:=RandomVariable(ChiSquare(3));

I've the equation

(-x^2+eta^2+2*x*xi+2*x*eta-xi^2-2*xi*eta-2*x*y-2*y*eta+2*xi*y+y^2)*(-x^2-2*x*eta+eta^2+2*x*xi+2*xi*eta-xi^2+2*x*y-2*xi*y-2*y*eta+y^2)-(x-xi)^4+6*((x-xi)^2)(-y+eta)^2-(-y+eta)^4

The answer is 0

But I can't get the answer by simplify and expand

Then which .Thanks

We have the data
X := Vector([seq(.1*j, j = 0 .. 16), 1.65], datatype = float):
Y := Vector([2.61, 2.62, 2.62, 2.62, 2.63, 2.63, 2.74, 2.98, 3.66,
 5.04, 7.52, 10.74, 12.62, 10.17, 5, 2.64, 11.5, 35.4], datatype = float):
and the model function of x with 5 parameters
F := a*cosh(b*x^c*sin(d*x^e)):
How to fit F to the data  up to the sum of the squared residuals being about 0.001?
Is such good fit possible with Maple at all? It is interesting that Mathcad (not MATLAB...

[edited by moderator] Consider the question of finding all partitions of a given set, for example as done using the two procesures in this previous Answer.

my problem is that i wont to represent the second Proc can not have a set as input 

Dear everyone,

  I have a weird question about the "print" command. Suppose I have somthing like

f1:=x^2;
f2:=x^3;
f3:=x^4;
print(f1,f2,f3);

 It will print

I have 2 questions that I can solve by hand, but I need to show how to solve using maple.

1. Solve for y: dy/dx = -y/x ; y(1)=-1

2. Indicate at each of the twenty-five points specified on the graph frame to the right (this is just a x=-2..2 and y=-2..2 graph with a 25 point grid) what the slope of the solution curve to y'=y is at that point.  Sketch the curve for the initial condition y(0)=0. The indicated points are at the (x,y) points from...

Is it too much to expect Maple 13 to do some basic simplification that a 8th grader student could do to clean up some of the wacky expressions it outputs?  In the above, why could it not divide by "C" straight away?  And why does it leave a minus sign hanging outside the expression?  A little more development programming effort devoted...

Hi, Could some body help me here, Am trying to use dsolve to solve the following system of equations but I am getting the following error

difS := diff(w(t), t) = nu+delta*z(t)-(1/100)*psi*w(t)*(x(t)+epsilon*y(t))-mu*w(t);

difI := diff(x(t), t) = (1/100)*(1-rho)*psi*w*(x(t)+epsilon*y(t))+PI*y(t)-h[1]*x(t);

difC := diff(y(t), t) = (1/100)*rho*psi*w*(x(t)+epsilon*y(t))+(1-q)*eta*x(t)-h[2]*y(t);

difR := diff(z(t), t) = q*eta*x(t)+beta*y(t)-(mu+delta)*z(t)

What is the maplet in maple ? What does it help me?

What is the maple sim ? where I can download it ?