there are 2000 matrixes, I want to multiply all of them. so I want to use a "for loop". I give a matrix to a variable "M" every loop, then multiply it to last result (variable "N"). I don't know if it is correct. if anyone knows how to deal with this problem, please help me.

Hi everybody, I execute this code: But dsolve does not give me any response! Do you know what the problem could be? Thank you,

Hello everybody, I use the following function: E := t* (1-exp(-(1-t)^2/(2*o^2))) The range of values is defined as t = [0..1] and o = [0..1]. I would like to draw the maximum value of E in the range t = [0..1] for values of o between 0 to 1. The figure should have the maximum value of E in Y-axis and the value of o in X-axis. Any idea?? Regards, Rafa.

Dear experts I have an urgent problem: I used the cholesky to geerate random numbers First I generate R1 and R2 (normal distribution, mean1=mean2=120, std1=std2=40). Then I use R2*=R1*rho+squrt(1-rho^2)*R2 Now I have R1 and R2* with a correlation of rho. The problem iR2* does not have the same mean anymore. It has 160 instead of 120. Can you explain that or find my mistake? If I did one is there a solution to generate R1 and R2* with the mean like the origin R2? Best regrads

I've got

And I want to solve for v to get it into this form...in ONE step

Hello together, I have a question in a very urgent matter: I create random numbers with the following command, that is no problem: X := RandomVariable(Normal(0, 1)); A := Sample(X, 1000) Now I want to add the value 100 on each value of the vector. Each of the total 1000.

I have to vectors with each 1000 values when I want to make addition of both I get: C:=evalm(A+B); Error, (in rtable/Sum) invalid arguments. How can I do it else?

 

I will be collecting motion data. I believe there will be high frequency errors in the data. I would like to convert the data into the frequency domain and view the frequency amplitude. (I have only a slight familiarity with the Fourier Series and Fourier Transform.)

Dear experts, I need to know how to create a vector D containing 1000 times the same value. For instance that each of the 1000 values is equal 10. Thank you a lot

I have a vector M with 1000 values Now I want to add a certain value N:=100 on each of the 1000 values of the vector, but I do not know how to do that. Result:=N+M?

Dear experts, I have a problem which is probably quite easy to solve for you. I generate 1000 random numbers with the follwing command and save them under R2 R2 := Sample(RandomVariable(Normal(0, 1)), 1000) Then I take this numbers and convert them with R2next:=mu1+R2 That means, I want to add mu:=100 on each of the 1000 values of R2. Does somebody know a solution for this problem?The problem is that maple responds: Error, (in rtable/Sum) invalid arguments

I have an issue where in standard interface Maple won't display the extra digits.  As an example evalf(10.5) returns 10.5 only. 

Hi maplers

I have a problem, since i am printing text in some procedures that i really want to be black and alligned to the left side. It would be a great help if anyone could help me out.

/Simon Johansen

Hello,
I want to display my plots in tabular form. So I have tried it with the display command and I wrote my plots in
an array.
The problem is, that I want to have two plots in the uppper left corner, but the display command ignores the
second plot.
Is there something wrong with my Array or is there another possibility to display plots in a tabular form??

L:=Array(1..2,1..3, fill=plot(x)):
L[1,1]:=plot(x^2), plot(x-1):
display(L);

Thanks for your help.

Helena

I want to solve the following system of ODE:

sys := {M*(diff(x(t), t, t))+C*(diff(x(t), t))+(2*Delta/(1+exp(20*(Pi-t)))+KMIN+Delta)*x(t)+((-20*Delta*exp(20*(Pi-t)))*(1/(1+exp(20*(Pi-t)))^2))*y(t) = P, M*(diff(y(t), t, t))+C*(diff(y(t), t))+(2*Delta/(1+exp(20*(Pi-t)))+KMIN+Delta)*y(t)+20*Delta*exp(20*(Pi-t))*x(t)/(1+exp(20*(Pi-t)))^2 = 0}

with the following Initial cdts:

ics := {x(0) = 0, y(0) = 0, (D(x))(0) = 0, (D(y))(0) = 0}