I am trying to plot a Linear Population Model using Maple, could anybody tell me what I am doing wrong. My plot is just registering as a straight line at 1.0 and I know this is incorrect.

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How does one keep a literal subscript from being translated into a indexed subscript?

Keyboard shortcuts work fine putting in the literal/index characters in Maple 2D.  If one converts the view to Maple 1D the text shown is correct.  But, as soon as one makes a next operation, Maple converts all of the literals to indexes!!!!  What's going on?

While it seems one could just keep working in Maple 1D input, this makes no sense.  The whole purpose...

hey guys, i need to do a couple presentations where i need to present some animations of equations such as

f(x) := a*(2*x^3 + x^2 - 3*x)    a=1..10

the question is how can i take the animation provided by maple and convert it to a some sort

 of video file such as and .avi file??

I am having trouble figuring out how to input the following functions:

1. Use Maple to find (vector)T for the vector function r=(cost+tsint)i+(sint-tcost)j+5k

2. Find the length of the curve, r=(3cost)i+(3sint)j

I want to solve two equations with all roots.

eq1:=-7.506556000*10^(-23)*omega^12+2.243366854*10^(-78)*omega^34+3.651941282*10^(-50)*omega^25+1.145341958*10^(-105)*omega^41-3.837716260*10^(-102)*omega^40+9.952750000*10^(-10)*omega^5+2.520327960*10^(-113)*omega^43-5.961864252*10^(-98)*omega^39+2.934254874*10^(-60)*omega^29+3.877088344*10^(-109)*omega^42-3.482296310*10^(-82)*omega^35+2.846747460*10^(-123)*omega^45-1.089582984*10^(-70)*omega^32-5.927854900*10^(-48...

I was using maple the other day, and suddenly i found out my 3D graph turned into black, but when i save the file as pdf, it could show the graph. And also it doesnt affect the maple displays 2D graph. So i wonder how did this happened and how i fix it.

Dear All,

Kindly help me plotting the following equation:

beta = 0.25

alpha0 = 0.2580   or 15 degrees

alphad = 0.545    or  31 degrees

Bmax = 0.7

alpha = 0 to Pi/2

B(alpha) = (1-beta-beta*cos((Pi*alpha)/(0.8*alpha0)))*Bmax      for interval     0<alpha<0.8*alpha0

B(alpha) = Bmax       ...

Hi; I am working on a package where the data mostly come in Maple records with a varisble number of fields with different names. At least one field in each record has a 6 by 6 matrix, the expressions of which involve the values associated with at least some of the other fields.

Occasionally I have the need to, say, apply a function to each of these fields. E.g., I want to substitute a value for a specific name; this name may show up in several fields and also will show up in the matrix.

ode1 := Diff(y(x),x$2) + (lambda-x^2)*y(x) = 0;

After put y = exp(-x^2/2)*y1(x) into above ode1

would like to find the solution of ode in terms of integration

in this example, it use z^(-lambda/2-1/2) = expa(-lambda/2-1/2)*log(z)

the example solution should be int(exp(...),z)

linearsol(ode1, y(x)); but return {}  nothing

Thanks a lot

Hi all. I am trying to use the Weyl character formula to evaluate some traces of Hecke operators on algebraic modular forms. This involves me having to substitute certain eigenvalues of 4x4 matrices into a polynomial of arbitrary degree (my choice).

I have created procedures that do this given the eigenvalues. Unfortunately I am having problems generating the eigenvalues.

The problem is that the matrices I am using are formed from products of matrices from two...

Hi,

Assume having to solve an ode with dsolve and plotting with odeplot. Further, markings at specific parameter values of the solution should be plotted, i.e. if p is the solution of the ode, the points p(t1), p(t2), ... should be plotted. Since the ode is complicated and computation takes a lot of time, is there a way to extract the values p(t1), ... from the odeplot result directly without invoking calls like subs(p(0.5),b(s)) again?

Fine $a_{n}$ of sequence  2 , 3 , 6 , 7 , 10 , 11 , 14 , 15,...

Hello every one,

I got an error while trying to solve numerically a nonlinear system of odes using 

the dsolve command. This error is very common,

"Error, (in dsolve/numeric/bvp) initial Newton iteration is not converging".

I tried the different technique explained in 

http://www.maplesoft.com/support/help/Maple/view...

I want to graph the portion of the plane 2x + 3y + z = 6 that are located in the first octant of a xyz coordinate system. The following implicitplot3d should in principle do it: