@acer My question is about highly oscillatory integral.I wanna integrate 
int(int(f(x,y)*exp(i*w*g(x,y),y=0..1),x=0..1)) which is higly oscillatory integral in a triangle with vertices  (0,0),(1,0),(1,1) and with g(x,y)=x^2+y^2. Since g(x,y) has stationary  point at (0,0), I have to interpolate f(x,y) except (0,0) but also quite close to (0,0). The problem is that since...

Good day, Is it possible to plot multiple (more than two) functions with 'dualaxisplot'?I've found some information about it on the Internet, which helped me out a lot, but I still don't know how to put in multiple functions in one dualaxisplot.For example I would like to plot a figure which consists of four functions, all of them having their own domain(!).Three of them are related to the 'left' y-axis, and the fourth function is related to the 'right' y-axis.Comment: I wanted to insert the formula over here, which I use to plot the dualaxisplot, but the 'dualaxisplot-command' isn't working ("You have entered an invalid Maple plot command").So for example, I do know how it works with two formulas, like:dualaxisplot(plot(2x,view=[0..10,0..20],labels=[x,left=2x],legend=2x),plot(x^2,view=[0..10,0..100],labels=[x,right=x^2],legend=x^2,color=blue)); Now I can independently change the left and right y-axis like I want to. Now I would like to have the shape of the next graph:The trhee formulas which belong together, and that I want to relate to the left axis (making one line), consist of: horziontal line, linear line, horizontal lineThe other line I want to relate to the right y-axis, which is a linear line. So I can write the four functions for example like:restart;with(plots):eq1:=50,x=0..3:eq2:=(50/(5-3))*(5-x),x=3..5:eq3:=0,x=5..10:eq4:=10x,x=0..10: I thought I could 'join' the (first) three functions by using the '{' and '}' symbols, but that isn't working either. Somebody has a suggestion?Or that it just isn't possible at all.... Thanks anyway for thinking along. Greetings, Frank   

How to use maple to compute the intersection of two permutation group

Hi,

I have a matlab file and i want to use this one in Maple.

Is there a way to convert a m.file to a maple file?

The matlab code is this:

%Parameter values
lambda=0.00755834; %Sheath loss factor
Re = 26.5 %Outer cable radius [mm]
Delta = 5.9E-7 %Thermal diffusivity of soil[m^2/s]
alfa = 0.00403 %Temp coefficient of conductor material [K^-1]
R20 = 0.321 %AC resistivity of conductor material at 20 °C [Ohm/m]
RHOs = 0.8 %Thermal resistivity of soil [Km/W]

Hi every body

I want to solve a differential equation y'(t) = sqrt((f-1)/(t^f-t)) and get an answer in terms of ordinary function.is it possible. thanks 

Hi there,

In the attached PDF I have a system of 16 equations with 16 unknowns (the unknowns are a_i, b_i, c_i, d_i for all i = 1..4). The x_{ijkl} represent known (arbitrary) values. 

Can someone solve this system and tell me what the solutions are? If there is more than one solution, then I only want one solution. 

 

Thanks!

Qn.pdf

hello, i'm using maple, in order to draw a graphic in wich, different functions are plotted, 
these functions came from one with 4 variables, wich represents losses in a phenomenon (extraction) depending on diffenrent variables, so my objective is to varry only one parameter and then draw its curve, and this for each parameter ; i had 4 functions.

with(plots):

f1:=plot((n-1)/(-1+n*10^(6.77*((n-1)/n))), n=1.0537..1.2688):

f2:=plot(0.2365/(-1+1.2365*10^(0.0155*O)), O=76.42..99.92):...

I want to create a package.  I want to be able to load it using the usual with(Accellib); construct.

how can i do it?

hi,

 

how can i solve the following ode

u'' + 3.4/ (u(0.25)*2+u(0.16)+2) + uu'=0

boundary conditions   u(0)=a  , u(0.5)=b

a and b are constants. for example a=0.1 and b=1

 

hi

please help me to solve the following system of ODE

 

diff(u(eta), eta, eta)+.5699919300/(0.9930000000e-3+0.3883623000e-1*phi(eta)+.5301627000*phi(eta)^2)+1/(eta-1)+(0.3883623000e-1+1.060325400*phi(eta))*(diff(phi(eta), eta))*(diff(u(eta), eta))/(0.9930000000e-3+0.3883623000e-1*phi(eta)+.5301627000*phi(eta)^2) = 0;

 

diff(T(eta), eta, eta)+(5.05659*((-1.1752324*10^6*phi(eta)+4.1744724*10^6)*u(eta)/(int((1-eta)*(-1.1752324*10^6*phi(eta)+4.1744724*10^6)*u(eta), eta = 0 .. .5))+7.47*(diff(phi(eta), eta))/(1+7.47*phi[0])-(.1977617327*(.597+4.45959*phi(eta)))*(diff(T(eta), eta))/(1-eta)))/(.597+4.45959*phi(eta))=0;

 

diff(phi(eta), eta)-5.000000000*phi(eta)*(diff(T(eta), eta)) = 0;

 

with following boundary condition

u(0)=0,u(0.5)=0,phi(0)=1,T(0)=0,D(T)(0)=0

 

thanks for your attention in advance

hey firends please help me for the following matrix code in maple for m x m order and for m x 1 order

Hi,

 

I want to check this inequality (check below) for the set of parameters that holds, and I also want to restrict my variable to be real and non-negative (i.e k>=0), I am getting the usual message that "Solutions may have being lost". Can somebody please help me on how i can handle this ? Thanks 

alpha*beta*(1-alpha)*k^(alpha-1)/(1+beta)-1-(2*alpha-1)*alpha*(1-alpha)*beta*k^(2*(alpha-1))/(1+beta)+alpha^2*k^(alpha-1)

 

Hi,

I obtain  curve pH = f(Vb) with following code

 

restart;with(plots);

 Vtot := V0+Vb+Vind;h := 10^(-ph);C0 := 10^(-2);Cind := .83;Vind := 0.1e-1;V0 := 10;Ka1 := 10^(-4.8);Ka2 := 10^(-9);Cb := 0.1e-1;Kaind := 10^(-8);

eq := h+Cb*Vb/Vtot = 10^(-14)/h+C0*V0/(Vtot*(1+h/Ka1))+Cind*Vind/(Vtot*(1+h/Kaind));

 implicitplot(eq, Vb = 0 .. 40, gridrefine = 3, ph...

Hello,

I installed Maple 17 on Slackware Linux 14.0 today and everything seems to work except that when I want to search for something through Maple Help my mouse doesn't seem to activate the text search field. Is this happening with anyone else or is this just because I am running under Slackware?

 

Thanks,

Jovan

 

hi

I have some equations like these: