Define nonsquare matrices A and B and a vector c such that following operation can be perform and perform the operation: A) A + B B) ( A - B)c C) define another vector c such that BV can be computed and computed D) solve the system of equation Ax = 0

Hey Everybody,

I have only been using Maple for a few weeks but have been very much enjoying the functionality of the with(VectorCalculus) tools. That said, I have been having some trouble evaluating vectors at specific values.

> with(VectorCalculus);
> P[0] := PositionVector([t, ln(t)]);
> N[0] := PrincipalNormal(P[0], t);
> P := eval(P[0], t = 1);

Hi, I have a 9x1 'j' matrix, i am trying to arrange it into a 'b' matrix. For b[6..9,1], I would like it to have matrix 'j' in 6,5,4,3. May I know how do i do it please?

j:=RandomMatrix(9,1):
b[1..2,1]:=j[1..2,1]:
b[3..5,1]:=j[7..9,1]:
b[6..9,1]:=j[6..3,1]: <<<doesn't work

Thanks.

Hi people!

I'm experiencing lags of about 45 seconds on the interface when trying to manipulate the blocks of my model. MapleSim becomes totally unresponsible when, for example, I make a new connection. It just happens with this model.

Curiously, when I disable an specific connection, I can manipulate the model with reduced (but yet present) lags.

For instance, my processor is an Intel Core i5.

Could someone take a look at it? I will upload the model on demand.

Hi there!

Is there a way to implement a fixed delay (not the Padé approximation)? I'm using MapleSim 5. 

I tried importing the Modelica's fixed delay block, but it seems that MapleSim doesn't support the implementation...

Thanks! 

Hi people!

Why there is not a "Modelica.Mechanics.MultiBody.Joints.RollingWheel" (different from 1-D mechanics rolling wheel) in MapleSim 5? It is previewed in the Modelica language and SystemModeler has this implementation.

Is there a way to import the model o this joint from somewhere? If not, how could I model this non-holonimic constraint in MapleSim? 

Thanks! 

Hi, I have a 9x9 matrix. I am trying to add the last column to the first column, and vanish the last column, leaving me with a 9x8 matrix. Then add the last row to the first row, and vanish the last row, leaving me with a 8x8 matrix. I would like to repeat the process till i'm left with a 6x6 matrix. May I  know how could i do it please.

I am currently moving it one by one, but is not efficeint when i'm doing a few sets of 9x9 matrix. Could I know if it is possible...

Is it possible the contour plot of these coupled equations

restart:with(plots): Nb := .2; Nt := .2; h1 := 1+a*sin(x);h2:= -b-d*sin(x); a := 1;b:=0.1;d:=0.1;F:=1-Q-d;Q:=-1;beta:=0.1;alpha:=0.1;G:=0.5;B:=0.5; eq1 := diff(alpha*f(y),y,y,y,y)+G*(diff(theta(y),y,y))+ B*(diff(phi(y),y,y))+6* beta*(diff(f(y),y,y))*(diff(f(y),y,y,y))^(2)+3* beta*(diff(f(y),y,y,y,y))*(diff(f(y),y,y))^(2)=0; eq2 := diff(theta(y), y, y)+Nb*(diff(theta(y), y))*(diff(phi(y...

Hi

I am trying to solve a Heat Transfer problem (of transient conduction in a 2D annulus of material with convective boundary conditions). I currently have a fixed heat transfer coefficient, but in reality this varies with surface temperature.

I am using the PDEsolve meothod to solve the equation. Is there a way of linking the temperature at the end of each time step into an equation to calculate h.

I am a Maple/programming...

Is it possible to have a contour plot of an ode, 

restart:with(plots);alpha:=1:

de1:=alpha*diff(f(y),y$4)+(diff(f(y),y$2)*diff(f(y),y$3)^2+diff(f(y),y$4)*diff(f(y),y$2)^2);

with  such type of bcs?

bc1:= f(1+sin(x)) = .95, f(-.1-.1*sin(x)) = -.95, (D(f))(1+sin(x)) = -1, (D(f))(-.1-.1*sin(x)) = -1;

contourplot({de1,bc1}, [x,y, f(y)],x=1..10, y=1..10);

Thanks

Let A(2 , -2 , 0) B( 4 , 2 , 5 ) & C( -1 , -3 , 0).Find  H(x,y,z) be the orthocentre of the triangle ABC.

Hi, why is it when i use swapcol, it doesn't register? For example,

k:=RandomMatrix(9):
j:=swapcol(k,1,4):
Dimensions(j)
j

Please help. Thanks. 

Hi, I am trying to use swaprow in a loop, but it is not working, could someone please point out what i am doing wrong please?

aFront:=RandomMatrix(9):

with(linalg):
for m from 1 to 3 do
Quad2:=swaprow(aFront,m,m+2)
end do:

Why can't i get Quad2. Please help, thanks.

What is the difference between with(Student[LinearAlgebra]) and with(LinearAlgebra)?

When i tried to use functions such as AddRow, SwapRow, it doesn't work when i load "LinearAlgebra", but works fine with "Student[LinearAlgebra]". May I know why is this so please? Thanks.

Let N(1, 1)=1 and N(1,k)=0 if k<>1. Let N(s+1,k) = N(s,k) + N(s,k-1) + N(s,k+1).
Acting in such a way, we obtain  the triangle
         1
       1,1,1
    1,2,3,2,1
  1,3,6,7,6,3,1
.................,
where only the nonzero terms are shown.
What is the explicit formula for N(s,k)? How to find it with Maple?