Maple 13 Questions and Posts

These are Posts and Questions associated with the product, Maple 13


Have a good day Sir.

can u help me how to solve my problem using the Implicit Crank Nicolson Finite different Method. I have attached the problem and what I have done in Word file. I have to modify my Equations in order to get the graphs (that is wrong actually). Can you help how to get the graphs by not change the sign of my equations?:( 


Thank you in advance.

God Bless you.



Aslam-u-Alikum. Hope you will be fine. I have some error in the last command of the attached file. I want this type of answer


StressesMultiplication := Matrix(2, 2, {(1, 1) = 7, (1, 2) = 10, (2, 1) = 15, (2, 2) = 22})

PhD (Scholar)
Department of Mathematics

Aslam-u-Alikum. Hope you will be fine. I facing the problem of the last line to the attached program. I need the values of lambda in decimal.

PhD (Scholar)
Department of Mathematics

How do you move plot labels individually? Just click-hold-and-drag does not work.

"A Virtual 3D Solar System":

How do you color the orbits individually?


I am trying to interpolate a set of arbitrary numbers including real ones like Pi and plot them using ArrayInterpolate. This does not work. Is there a simple way around this?

Thank you.

I am trying to find the root of an equation that involves a procedure and a definite integral (solved numerically). Of course, I don't need the root to be found symbolically, but numerically would be fine. The problem is, I keep getting the error

"Error, (in fsolve) Can't handle expressions with typed procedures"

whenever I try to solve it. Anyone have any ideas? My worksheet is here: 


I'm computing a matrix which is a hessian of a quadratic function and it should be symmetric.

Unfortunately, because of the numerical errors, the hessian matrix becomes unsymmetric. 

Then, I want to use this matrix as the input for the QPSolve procedure, and I get the error that the matrix is unsymmetric.  

To obtain the symmetric matrix, I'm doing the following redundant computation:

A := MTM[triu](B, 1) + Transpose(MTM[triu](B)):

Is there a better solution to this problem?

AoA. Hope you will be fine. I want to factorize 2046 as


but maple gives



PhD (Scholar)
Department of Mathematics

i want to plot a arc that starting angle and finishing angle are variable

but it didn't show the arc there is my code

Hi there,

I used the implicitplot command to plot an implicit equation as follows:


implicitplot(x^3+y^3-3xy=0,x=-3..3,y=-3..3, scaling=constrained)

but maple13 takes error and specifies {xy} as an extra unknown.

Your help will be appreciated.


AoA. How are you hope you will be fine. Sir the following matrix have been given

A := Matrix(2, 2, {(1, 1) = 1, (1, 2) = 2, (2, 1) = -1, (2, 2) = 2});

B := Matrix(2, 2, {(1, 1) = 1, (1, 2) = 0, (2, 1) = -2, (2, 2) = 3});

C := Matrix(2, 2, {(1, 1) = 0, (1, 2) = 0, (2, 1) = 0, (2, 2) = 0});

I want to write M by M matrix using the above matrices like this


PhD (Scholar)
Department of Mathematics

AoA... I want to plot the following functions






in one coordinate having the line style and legend like attached file.


PhD (Scholar)
Department of Mathematics

AoA. How are you? Sir want to generate the attached square matrix for any value of M. Please help.


PhD (Scholar)
Department of Mathematics

AoA. How are you? I want to solve the following equation in one step and convenient way please help



P := Matrix(3, 3, [1, 2, 1, 0, 1, 1, -1, 2, 3])

U := Matrix(3, 3, [a[1, 1], a[1, 2], a[1, 3], a[2, 1], a[2, 2], a[2, 3], a[3, 1], a[3, 2], a[3, 3]])

u := psi(x)^T*(P^2)^T*U*P^2*psi(t)-t*psi(x)^T*(P^2)^T*U*P^2*psi(1)-x*psi(1)^T*(P^2)^T*U*P^2*psi(t)+t*x*psi(1)^T*(P^2)^T*U*P^2*psi(1)


If you reduce my computational work or have any suggestion to solve please give.

PhD (Scholar)
Department of Mathematics

AoA. How are you? Hope you will be fine. I want write the following in Loop for any M


F[r,s]:=2^(k+2) m sqrt((c[r-1])/(c[s-1])) for r=2...(M+1), s=1..r-1 and (r+s)=odd;

F[r,s]:=0  otherwise



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