Hi, Sorry for the above message. C and F are both vectors which dimensions are 90000 now. Later, I will increase the dimension regularly. Thanks. "Gulcin M Muslu" <gulcinmuslu@gmail.com> wrote in message <g6uc9l$clc$1@fred.mathworks.com>... Hi, C and B are both vectors which dimensions are 90000 now. Later, I will increase the dimension regularly.

Hi, In order to solve the coupled linear system Ax+ By= C Dx+ Ey= F I tried Titus's suggestion y = (D\E - A\B) \ (D\F-A\C) and John's suggestion, y = [A B ; D E] \ [C F]. Unfortunately, I couldn't get correct results bu using both of them. I get the error message which is ??? Out of memory. Type HELP MEMORY for your options and the warning message Warning

Hello, Your problem isn't too bad. All you have to do is make your own colormap. You can do this using the following two lines of code gray1=linspace(.3,.7,64)' gray1= [gray1 gray1 gray1] This will make gray1 a new colormap that is not as extreme black or white as the gray colormap. Using Colormap(grey1) will apply your newly created colormap So your new code will be deltax

"Titus" <titus.edelhofer@mathworks.de> wrote in message <g4lc3e$pc9$1@fred.mathworks.com>... H Gulcin, O.K., first of all, the situation is exactly what all the replyers have anticipated, namely, that solving systems of linear equations is what you are after! Let's see, what we can do. I hope, the dimensions of B and E are somewhat smaller? Whereever you write inv(X

"Gulcin M Muslu" <gulcinmuslu@gmail.com> wrote in message <g4latt$9ko$1@fred.mathworks.com>... Dear Titus, I would like to solve linear algebraic system as follows: Ax+ By= C Dx+ Ey= F If I multiply the first eq. by inv(A) and the second eq. by inv(D), then I get the linear system [inv(D)*E-inv(A)*B ] y= [inv(D)*F-inv(A)*C ] So I need