Recent content by sugaku

hi all, i have a vector, z which size is 1 by m. z = [1 2 3 4 5 6 7 8] then i want to make a matrix with m by m Z= [z; z; z; z; z; z; z; z] if m become bigger i couldn't do it like mentioned above. how could i generate the matrix by a single command? thank you in advance.

Thanks Jackmell... thanks for the advice and the coding. I'm not familiar with the numerical coding above as I am working it out analytically. I'm pretty sure that someone (familiar with mathematica) at my school will enlighten me on this. As for the conjecture you made, I am going to discuss...

Good day to all, I encounter this expression in analyzing my equation after transform it using Laplace Transform, to get the answer I have to invert it back, I have no idea on how to find its inversion. [text]-\text{Cosh}\left[\sqrt{2 s+s^2} x_0\right]+\text{Cosh}\left[s h_0+\sqrt{2 s+s^2}...

Thank you so much for your help. I do appreciate it. I am not familiar yet with the usage of (-1)^(# - 1)

Good day to all, I am stuck with this. I am trying to construct a matrices with this properties... if n = 8, suppose the matrix with size 1 by 8 become [16 -16 16 -16 16 -16 16 -16] if n the matrix become [2n -2n 2n -2n 2n -2n 2n -2n ] with size 1 by n I do appreciate if someone...

thank you, yes you are right, to apply a condition, i need to put ; thank you again.

Good day to all, I'm trying to construct a m x m (size) matrix which have 1/2 on the diagonal, zeros to the lower triangular and 1 to the upper triangular. m=10; f[i_,j_]:=1/2 /i==j f[i_,j_]:=1 /i>=j f[i_,j_]:=0 /i<j m=Array[f,{m,m}]; m //MatrixForm I think, supposedly this will...

Good day to all, I need help on how to change font size for numbers in x and y axis. For axes label I could change the font size using below command, but how about the scaling itself. Plot[Sin[x],{x,0,100},AxesLabel->{Style["t",Italic,Large]}] Thank you in advance. Regards, sugaku

Good day, thank you Hepth, it works. I will figure out how can ListLinePlot data can be visualize as block pulse graph. If I use Matlab the data simply will visualize as block pulse graph. thank you again.

Good day to all, 1) I find difficulty on putting two 2D graphs into one figure. If same command it is easy to do but i have different commands, the commands are listlineplot and plot...

Thank you DaleSpam, it works out already.

Hi guys. Thank you for your reply. Actually I found one journal 'Multi-precision Laplace transform inversion' discussing about laplace inversion in complex plane named fixed talbot algorithm. this is the direct link to the said journal...

Thank you for your reply. I'm sorry I should use latex, I'm looking inversion of -\sqrt{s}

Hi, I want to inverse this laplace transform, -(s^(1/2)), seems that the inverse is in complex plane. Where should i start to find this inverse... Thank you.

Hi, I found this mathematica packages file and can't use it... "The "FixedTalbotNumericalLaplaceInversion.m" file should be placed into the AddOns folder on the user's computer" As written in the file, i need to save this file under AddOns folder. Done with that and yet still couldn't...