These are Posts and Questions associated with the product, Maple 15

HI,

I measured some points. This points are plotted in a graph. Now I want to make a fit on this points.

I now that the fit-function has to be like this:

F = A + B1 x e^(-t/C1) + B2 x e^(-t/C2)

Problem: how can I create a fitting function like that?

The best thing I found is the "spline"-fit, but it doesn't work properly. It has to be one lonely function, not a summary of several functions (like spline).

I have a problem with solving these two equations.

When I put this into maple -> solve([0.4=a*cos(b*8)+3 and 0.2=-a*sin(b*8)*b],[a,b])

It say: "Warning, solutions may have been lost". I don't know what to do.

why do i get this

"Error, (in solve) cannot solve expressions with diff(diff(y(x), x), x) for x"

when i input these:

> restart; with(DEtools); with(plots); with(linalg);> ode2 := x^2*(diff(y(x), `$`(x, 2)))+x*(diff(y(x), x))+4*y(x) = -2*x+7; bc2 := y(1) = 7, y(4) = -1;

a := 1; b := 4

ic2 := bc2[1], (D(y))(a) = alpha

constraint := lhs(bc2[2])-rhs(bc2[2]); constraint = 0

Hi,

The error showed up whenever I tried to do the Maximum Likelihood Estimation with Global Optimization Toolbox.My objective (likelihood ) function f is defined as follows(A1 to A5 are intermediate variables; parameters are x[1] to x[12]）:

f := 0;

for j from 1 by 1 to 21 do

A1 := exp(x[1]+x[2]*c[j]);

A2 := exp(x[3]+x[4]*c[j]);

Hi All,

I am using maple 15 for a mechanical modeling, which has some very complex trigonomitry manipulations. The

script runs fine in maple 9.5.1 under window XP. But when I try to load the script in maple 15 under window 7,

it keeps loading forever. I noticed the memory usage in window manager to approach 1GB. (I have 4 GB in my PC).

The 9.5.1 uses much small portion of the memory. Does anyone see this problem before?

I have some data that requires a logarithmic y-axis for its histogram, but I want the y-axis to start at y=10^0. In my histogram, the y-axis starts near 10^-2, seemingly because I have 0-points in my data. How can I restrict the y-axis to start at 10^0?

program is：for t from 10 by 2 to 100 do h := solve({x*y*z = 6*t^3, x-y-z = 0, x+y+z = 6*t}, {x, y, z}); A[(t-8)*(1/2)...

Hi all,

I'm currently running a parameter space search via Maple scripting. The pseudo-code goes something like this:

fopen text file to write data to;

initialize parameters (variable) x, y, and z;

for x number of iterations

A:-Simulate(model.msim, with [parameters]);

Update parameters with new values;

Write to text file;

end do;

fclose(text file)

I use Maple 15 and I want to take the real and the imaginary part of a simple expression e.g. 5*Dirac(x)+3*I, having already assumed x a real value. However, Maple seems to have problem with the Dirac function. The output looks like this:

> assume(x, 'real');> Re(5*Dirac(x)+3*I); 5 Re(Dirac(x))> Im(5*Dirac(x)+3*I); 3 + 5 Im(Dirac(x))

Any thoughts on how to overcome this are welcomed.

Hi I'm new to maple and have to solve this:

Find the transferfunctionI beleve the answer should be:H(s) = Y(s)/G(s) = 1/(s^2+(1/4)s+1) (correct me if I'm wrong)but i have to show how to do it in Maple in a scool project

please help me have tried for several hours now, but cant get it right

I want to solve equations,program in maple as follows:

solve({n = b+2*c+q+2*r, (a+b+c)/(p+q+r) = 9, n*b-3.32*a*(a+p+2*n)*10^(-7)*t^(5/2)*exp(-18.27*10^4/t) = 0, n*c-3.32*a*(a+p+2*n)*10^(-7)*t^(5/2)*exp(-32.035*10^4/t) = 0, n*q-3.32*p*(a+p+2*n)*10^(-7)*t^(5/2)*exp(-9.16*10^4/t) = 0, n*r-3.32*p*(a+p+2*n)*10^(-7)*t^(5/2)*exp(-18.77*10^4/t) = 0, a+b+c+p+q+r+n-.73*10^28/t = 0}, {a, b, c, n, p, q, r})

I can't get the results but "Warning, solutions may have been lost"

Can anyone help me write a procedure for Maple 15 that does the following:

INPUT: number of unknowns and equations n; augmented matrix A=[aij], where 1<=i<=n and 1<=j<=n+1.OUTPUT: solution x[1], x[2], ... , x[n] or message that the linear system has no unique solution.

Step 1: For i=1,...,n-1 do steps 2-4. # Elimination process.

Step 2: Let p be the smallest integer with i<=p<=n and A[p,i]≠0. ...

I have this

plotS := plots[:-implicitplot3d](S0(2, 1, x0, sigmaH) = S0(c, delta, xT, sigmaL), c = 0 .. 4, delta = 1 .. 3, xT = .8 .. 1)

to draw the graph below. What I would really like is to revert the direction of the xT axis. Any way to do this??

Thank you for your help

I want to write a code to generate Legendre Polynomials using the Gram-Schmidt Process. I have no experience with programing. Here is how the process should work:

Given "(f) = {f[0]=1, f[1]=x , f[2]=x^(2) , f[3]=x^(3) , ... , f[n]=x^(n)} " Find the Legendre Polynomials: "{P[0] , P[1] , P[2] , P[3] , ... , P[n]}"

First, P[0]=f[0]=1

then, the rest are defined recursively by

P[1]=f[1]-(()/())*P[0] = x

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