Hi, I need to maximise z = 20*x_1 + 25*x_2 subject to: x_1 + 6*x_2

Hi

I was wondering how maple deals with the powers of a piecewise function. I've a piecewise function of f of thins kind

A_eff:=proc(f)
global Enn,f_a,f_b,f_c,alpha_var, Ell_lor,w_var;

piecewise(f<f_a, (f)^(-7/6), f< f_b and f >=f_a, alpha_var[1]^(-23/2)*(f/alpha_var[1])^(-2/3), f< f_c and f >= f_b, alpha_var[1]^(-7/6)*w_var*Ell_lor(f,alpha_var[2],alpha_var[3]))

end proc:

and then I must integrate A_eff^2 over a range of frequency which begins before f_a and ends at f_c

Hi everyone. Forgive me for bad english, but it's important to solve one problem. Here is my Maple-code: >restart; define_external(WATCOM); Integral := define_external('periodic_integral','FORTRAN','eps'::float[8], 'Low_1'::float[8],'High_1'::float[8],'Under_I_1'::PROC('x'::float[8],'RETURN'::float[8]), 'WRAPPER','REPLY_1'::float[8],'LIB'="D:/Integral/Debug/Integral.dll"); eps:=10e-5: a:=0.: b:=10.: Under:=proc(x) RETURN(cos(x)*sin(x)) end proc: Reply:=0: Integral(eps,a,b,Under,'Reply'); print(Reply);

how can i solve these two massive nonlinear equations ? and by which way ?

the 1st is:-

Hi,

I am just wondering, if dealing with 'large' numbers,

which one is better? or which is approiate?

+++++++++++++++++++++++++++

restart:
a:=[12,34,56,78,100000];
t:=time():map(i->Power(i,43214342341) mod 5423524532,a);time()-t;
+++++++++++++++++++++++++++

restart:

a:=[12,34,56,78,100000];

t:=time():
for i to nops(a) do
a:=subsop(i = `mod`(Power(a[i],43214342341),5423524532),a):
od:
a;time()-t;

+++++++++++++++++++++++++++

Hi

I'm sorry about the weird subject of this topic.

Somewher in my calculation with maple I expect to find integrals of products of derivatives of a function of (say) f and M other parameters (say a vector theta) , possibly with constant (symbolic) coefficients, times f^alpha  (alpha real. Something like

Int(  N* Diff(psi(f, theta_1, .., theta_M), theta_a))* Diff(psi(f, theta_1, .., theta_M), theta_b))* f^alpha)

(N is an unknown constant)
I want, if possible to tell to maple:

I need help on turning this code into a procedure and what changes do i have to make  so it works like the gauss-seidel algorithm. I have tried many times on my own but can't seem to get my head around it. Any help would be appriciated greatly.
 

 

How can I set up the game of Pig in Maple ?   en.wikipedia.org/wiki/Pig_%28dice%29

Does anyone have any experience with such an game in Maple ?

Could anyone please explain the solution in simple terms ?

 

Hi,
I'm using Maple to write a report.Maple always produces quite complicated results during some steps while I only want to print the last simplified one.I need to keep those intermediate expressions because some errors will occur when reevalutes worksheet without them.
So can I hide intermediate results?Thanks.
 

I tried posting this on a similar post but didn't get a response:

I'm trying a similar thing but the intermediate voltages (in my case Va, and Vb) are not being removed.  Here are my equations:

First of all: I'm so sorry, I posted my question to a wrong place ( into the poll).

So I copy here the question and the answer of jakubi and my reply to jakubi.

Question:

I would like to solve the following system

x*(2*sin(x)*y^2+x^3*cos(x)+x*cos(x)*y^2) = y*(2*sin(y)*x^2+y*cos(y)*x^2+y^3*cos(y)),

-x*sin(x) = y*sin(y);

Until I have founded only the solutions

x = k*Pi,  y = +/- k*Pi;    k is any integer.

jakubi's answer:

more solutions

Hello every body,  and many thanks for our help !!!

i have the following transient heat conduction  equation:

dT/dt = a * d^2T/dx^2

now i have:

T(0,t ) = k1(t) : boundary condition

T(L,t) = k2(t) : boundary condtion

T(x,0) = k3(x) : initial condition

and

T(x,t) : solution at all the time

how to find out

a ?

I need to plot the slope field for this DE: (y'(x))^2 - 4*x*(y'(x)) + 4*y(x) = 0 I'm very new to Maple (tonight was my first time using it) and I'm not a good programmer, so any light you can shed on my problems would be much appreciated. This is what I tried: > with(DEtools); > eq := (diff(y(x), x))^2-4*x*(diff(y(x), x))+4*y(x) = 0; > DEplot(eq, y(x), x = -1 .. 1, y = -1 .. 5); And then I get this error: Error, (in DEtools/DEplot/CheckDE) unable to isolate DEs for required derivatives Thanks