Hi,

     For some reason Maple won't compute the eigenvalues to my matrix, which contains complex numbers and 1 symbolic parameter (h). heres the code

 

elements:=[1.+0.*I, -0.1e-5-0.4e-4*I, 0.2e-3+0.*I, -1.*10^(-7)-0.4e-5*I, -0.1e-5-0.4e-4*I, -0.1e-2+0.2e-4*I, -3.*10^(-7)+0.3e-4*I, -2.-0.2e-5*I, 0.3e-3+0.*I, -3.*10^(-7)+0.3e-4*I, 1.+0.*I, 6.*10^(-7)-0.2e-5*I, -1.*10^(-7)-0.4e-5*I, -2.-0.2e-5*I, 6.*10^(-7)-0.2e-5*I, -0.3e-4-9.*10^(-7)*I]:

Hello,

On a mechanical system that I could put in the classic form M*diff (x, t, 2) + K*x (t) = 0, I would like to calculate the angular frequencies.The methods that I know are:
- Calculate the solutions of the equation det (K-omega ^ 2 * M) = 0
- Or calculate the solutions of the equation det (M-1K-omega ^ 2 * I) = 0
- Or directly determine the eigenvalues ​​of M-1K using functions already created in Maple for example.

Hi,

I am trying to solve an ODE with Maple:

I have following commands at Maple:

 

>T:={[{a,b,c,d}, table([a=0,b=0,c=0,d=0]),8],
[{a,b,c,d},table([a=6,b=1,c=2,d=0]),8],
[{a,b,c,d},table([a=6,b=5,c=5,d=7]),8],
[{a,b,c,d},table([a=7,b=1,c=2,d=0]),8],
[{a,b,c,d},table([a=8,b=8,c=8,d=8]),8]};
 
> member([{a,b,c,d},table([a=0,b=0,c=0,d=0]),8],T);

I want that it should respond `true` as the given special list is a member of the set T, but it gives me `false`. Help please.

i want to adding new maple package file extension with .lib  .ind  .eps.

i didnt find where to copy this.

I have a very big problem in answering this equation.>Int(1/sqrt((x-R*cos(theta))^2+(y-R*sin(theta))^2+z^2), theta = 0 .. 2*Pi)+Int(1/sqrt((x+l*cos(alpha)-R*cos(theta))^2+(y-R*sin(theta))^2+(z+l*sin(alpha))^2), theta = 0 .. 2*Pi)I've put the equation. then simplify(%). It becomes like this:Int(1/sqrt(x^2-2*x*R*cos(theta)+R^2+y^2-2*y*R*sin(theta)+z^2), theta = 0 .. 2*Pi)+Int(1/sqrt(x^2+2*x*l*cos(alpha)-2*x*R*cos(theta)-2*l*cos(alpha)*R*cos(theta)+y^2-2*y*R*sin(theta)+R^2+z^2+2*z*l*sin(alpha...

for example:
array1:=Vector(10,0): 

for i from -0.5 to 0.5 by 0.1 do

print(sin(i)):

end do:

I want to write the 10 results of sin(i) into array1 in sequence

How to make it?

Additionally, if I don't want to write the 6th (i=0) value to array2:=Vector(9,0), what should I do?

Thank you

k:=<1,2,3>:

mu:=<4,5,6>:

sigma:=<7,8,9>:

solutions:=<1,2,3,4>

product(add(1/((I*.5)*exp(solutions[i]*sqrt(2)*sigma[j]+mu[j]-ln(k[j]))+1)^k[j], i = 1 .. 4), j = 2 .. 3);

 

returns "Error, bad index into Vector"

Hello, I'm currently trying to solve this set of ODE's, but the way I have formulated the problem seems to be hard to process. Is there any simpler way of doing this, because it takes Maple a few minutes to solve 10 steps and I need more than a 100.Thank you in advance!l := 1.34*.75;Omega[p] := sqrt(g/l);v := .75;f[p] := .35*v^3-1.59*v^2+2.93*v;bmin := 0.157e-1;ci0 := y1(0) = 0, (D(y1))(0) = v;u0 := 0+v/Omega[p]+(-1)^0*bmin;p1 := diff(y1(t), t, t)+Omega[p]^2*(u0-y1(t)) = 0;k[1...

I know this has to be an easy on, but I simply cannot figure out how to calculate the probability of a dice roll or a card pick. I want to calculate the probability of rolling four sixes in a row, or picking three kings in a pack of playing cards. I know how to to the math by hand, but I want maple to calculate it for me. 
I've tried google my problem, but with no useful results (they were all a lot more advanced then what I could figure out). I'm guessing it's because...

Dear All,

I am a bigginer of Maple. I'm trying to solve the following in Maple.

 

> with(Statistics);
> f := Distribution(NormalDistribution(0.3,1));

> Y := RandomVariable(f);
> fy := PDF(Y, y);

> Fy := CDF(Y, y);

> int((diff(-ln(1-Fy), y))*fy, y = -infinity .. infinity);

> w := evalf(%);

 

But Maple told me that the answer is the integral -float(∞)..float(∞).

Hi,

I wonder if you could help me. I'm trying to calculate the eigenvalues of a complicated 3x3 matrix in Maple, but I'm not very familiar with Maple syntax. The answer maple has provided me with is in the form,

(&*(sin(pi*q/P),P/T,3x3 matrix))

How do I interpret this result? The eigenvalues are scalars.

Thanks for your help,

Sian

 

 

How can i use previous inputs in new maplet window.For example i have two maplet windows; maplet1 and maplet2 I use some inputs as a functions in maplet1 and i open new window by using botton from maple1.I also want to use same inputs for calculating function in maplet2

I have a set of sets named T. How I can take all possible unions of the members of T and if the result is not in T already, include it in T. I want to do this using a seq command, but could not do. Can anyone help? This is so to say, T is to be made closed under union.

how can i preform this calculation in maple?

(&PartialD;)/(&PartialD; log(R[e[0]]))(log(N[u]))

it's a derivative of a logarithmic expression with respect to another logarithmic expression, the one on the bottom is a "standalone" vairable and the one on the top is a function of the previous one and some others.

thaks in advance to anybody who might help.