Download 11608_differential equations.mw
View file details

I use maple sovle an optimality question with hamilton function, but the results are quite different from the given result using matlab. I do not know where I'm wrong ,so can anybody help me ?

Thank you very much!

 

I am trying to fit the solution from  one nonlinear ode and compare with a set of experimental data. How can I  do this ?.

Thanks in advance... and  any comment will be usefull.

 

 

 

 

Greetings All

I'm trying to find repeating numbers in the golden mean like 618, 619,645 etc..

I'm getting error message because of syntax and the decimal point how do I take the decimal point out so instead the string is 618 instead .618

How do I get rid of the decimal point in a string?

 

example

p:=evalf((1+sqrt(5))/2-1,20);

ns:=convert(p,string);

seq(Take(p,i),i=0..20)

SearchText(678,p)

tia sal22

> restart; with(plots); with(plottools);
> mirror := proc (x) options operator, arrow; x^2 end proc; slope := proc (x) options operator, arrow; 2*x end proc; width := .5; height := 1; n := 25;
> mirrorplot := plot(mirror(x), x = -width .. width, y = 0 .. height, axes = NONE, scaling = CONSTRAINED, color = black); display(mirrorplot);

To install in linux do I type:

./installMapleLinux -i console

in the appropriate directory ?

 

thanks

i am from indonesi..

i using windows vista.. but i can not use maple 9..

what version  compatible for vista???

p := display(seq(cutout(v, 4/5), v = stellate(dodecahedron(), 3)), style = PATCH);

q := display(cutout(icosahedron([0, 0, 0], 2.2), 7/8));

display(p, q, scaling = CONSTRAINED, title = `Nested Polyhedra`)

Hello,

when using Maple to do simple calculus I usually have to explicitly
state the dependence of each variable in the expression....for example

c*(1-cos(x[1](t)))+x[2](t)^2/2

is there a way to declare generic functions of a dependent variable
say

x1 = x1(t) or x2 = x2(x,y,z)

and avoid having to do it repeatedly in an expression?  I know i can use subs to replace patterns, but can you declare somthing like f(x,y,z,t) without giving the details?

Thank you

hi! i get the following error when i try to see response to my thread coeff problem in maple 13. Fatal error: Call to undefined function getgif() in C:\xampp\htdocs\modules\maplemath\maplemath.module on line 30 how can i fix it?

What's wrong (Why isn't Maple responding 'True')?

restart;

assume(n, natural);

evalb(sum(binomial(n, k)*x^(n-k)*y^k, k = 0 .. n) = (y+x)^n);

false

simplify(sum(binomial(n, k)*x^(n-k)*y^k, k = 0 .. n));

(y+x)^n~

The last line shows it's supposed to be true... it's the binomial theorem. Is there something i'm missing?

hi! i've the following problem, that i can't figure out using maple. i've the following polynomial which i tried to extract the coefficients using maple con:=(-2/(3*lambda^3)+1/(30*lambda)+4/(5*lambda^5))*t^2+(-(1/2)*sqrt(2)/lambda^4+(1/3)*sqrt(2)/lambda^2)*t^(3/2)+(-1/(3*lambda)+2/(3*lambda^3))*t-(1/2)*sqrt(2)*sqrt(t)/lambda^2+1/lambda+(1/2)*sqrt(2)*ln(lambda)/sqrt(t) with the following command: sum(coeff(con,t^(-1/2+k)),k=0..3) but this does not work. however i'm able to extract the coefficiets if i.e. i specify the order of t. can anyone please help

Hi,

 

I have a function of two variables defined implicitly, from which I'd like to get a data table. Simplified example

XY = 2 .... Generate

 

X    Y

1    2

2    4

3    0.666

4    0.5

 

Of course, Actual function is much more complex, Solving for one X in terms of Y not possible

Do you have any Example about the Multiple Shooting method on Maple? I want the specific examples. Please help me! Thanks so much!

This may be a quite basic problem, but I've been looking for a long time for a solution and could not find any.

Let's assume I have a function:

f:=(x)->exp(a*x);

Now I do diff(f(x), x);

How to make maple return result in a form: f(x)*a instead of a*exp(a*x)?

Ofcourse I would be very grateful for a solution which can do the same with nested functions and expressions...

View 11608_differential equations.mw on MapleNet or Download 11608_differential equations.mw
View file details