MaplePrimes Questions

Is there any way to integrate this in maple?

lambda^2*t*(diff(theta(t), t, t)) = lambda^2*(diff(theta(t), t))-Pr*s*lambda*(diff(theta(t), t))+Pr*(diff(theta(t), t))-Pr*t*(diff(theta(t), t))

 

If I used factor, it didn't simplify to 0. As you may notice that this value should be 0.

Hello!

I need help, because I can't find solution.
How can I export data from Bode Plot to Excel? Two below solutions don't work.

 

with(DynamicSystems);

T2 := TransferFunction((1.224867518*10^(-7)*s+2.259345677*10^(-6))/(s^2+11.83692270*s+238.3951363)):

BP2 := BodePlot(T2);

with(ExcelTools);
ExcelTools:-Export(op([1, 1], BP2));

Export(BP2, "Employees13.xls", "Payroll1", "B2");
 

File_1.mw

Never really used the writeto command but what's with all the typesetting gobbledygook in the text file?  It occurs with document and worksheet mode.  Perhaps it's only meant for classic or command line maple?

Is there a way to log the terminal output to a .txt file?

Dear all

Trying to plot this expresion

f := epsilon-1.5+9.3*I = (a+I*b)*(26.+I*(-45.-1.0*Re(a+I*b)^2-1.0*Im(a+I*b)^2))

implicitplot (a^2+b^2) against epsilon

many thanks

I am trying to solve a linear system involving large number of equations with constant coefficients using Solve command from the LinearAlgebra package. The maple program is giving solutions for a smaller number of equations (T=10,Ne=20,Ng=15). But if I increase the number of equations to (T=20,Ne=30, Ng=25), then I got the error kernel connection has been lost. I need to increase the number of equations beyond this also. Any help to simplify the code or finding errors is appreciated.

solntosystem.mw

I would like to perform an implicit differentiation of the following:

eqn := 5*(x*y)^2+x/sqrt(y) = x^2+2*(3*x^3+y^2)^3

However implicitdiff(eqn, x, y); produces an output that expands the result.  Is there a way to not have it expand?

I tried something to the effect of...

eqn := 5*(x*y(x))^2+x/sqrt(y(x)) = x^2+2*(3*x^3+y(x)^2)^3;

diff(eqn, x);

but now what I need to to isolate d/dx y(x)...

Any suggestions are much appreciated.

 my question is
I am working on for loop and there are multi-line inside it and I only need to show a specific result, not all that occurs inside the loop . is there any commend to do that in maple?

with(Statistics):

LetList := [C, E, F, H, K, P, T, W, X, Y]; LetList[Sample()];
           LetList := [C, E, F, H, K, P, T, W, X, Y]
Error, invalid input: no implementation of Sample matches the arguments in call, 'Sample:-ModuleApply()'

Can any one help me with random sampling from LetList ?

 

Melvin


 

what is the code of the following equation:

 where h, and g are matrices with positive determenets. 

How can we create the following upper triangular matrix?

where k and M are any integers,
 F and L are MxM Matrices  as follows

 

restart;
with(LinearAlgebra):
k:=2:
M:=3:
F:=Matrix(M,M):
for i from 1 to M do 
  for j from 1 to M do
 F[1,1] := 2;
    F[i,j]:=0
  end do
end do:
F;
L:=Matrix(M,M): 
L:=LinearAlgebra[BandMatrix]([
      [seq(-sqrt(2*i-1)/(2*i-1)*sqrt(2*i-3),i=2..M)], [1,seq(0*i,i=1..M-1)],[seq((sqrt(2*i-3))/((2*i-3)*sqrt(2*i-1)),i=2..M)]]);

 

Dear Users!

Hope you would be fine with everything. I want to evaluate the following expression for k = 3, j = 0, r = 1.

I am waiting for your positive reply. Thanks in advance

Hello,

every time I input a formula I get:

Typesetting:-mparsed(x^2 +5 -2,x^2+3; "_noterminate")

I can't get rid of this error: this is very basic, what happened?

TIA, Roberto

 

I think   looks much nicer than

it is indeed the answer to .  Both above are equal but there are less terms on the left.  It's just what Maple does - it doesn't like radicals in the denominator.  For just a little overhead I would prefer a collection of any sqrt value into the denominator than to have to split it up.  Maybe just my preference.  Perhaps an option could be available within the Maple system to allow numeric radicals in the denominator? 

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