Substituing on a BIG EQUATION doesnt give answer (Computer Lag)

I am trying to substitute values and convert a symbolic equation into a 6x5 double array.

The symbolic equation is VERY VERY VERY VERY VERY BIG Its more than 25,000 characters and matlab cannot display it

I have substitute a single value, and checked that the code generates correct values and it takes about 5 seconds to display that.

I have also tested my code to convert equation to 6x5 double array on a simpler equation and that is also correct

So code is completely alright

But when i try to do it on my big equation, my computer doesnt give any answer for 5 minutes. MATLAB states itself busy. What can i do

Computer - i3 2.1Ghz 2nd Gen 6GB RAM

[Merged information from duplicate question]

I have two HUGE symbolic equations - much greater than 25,000 characters.

I make an 5x5 array for both of them. And then i have to plot a mesh with one of them as x axis and the other one as y axis.

If my substitution is only an 2x2 or 2x3 array, the code runs PERFECT.

I have used the substitution code for simple equations for 6x5 arrays for its verification and the code works fine.

If i increase the range of the my big equation to 6x5 or 5x5 array, i get mupad and subs errors.

6Gb ram - i3.

How can i overcome this errors.

Answer 1

[Walter Roberson]

Your original question is still here and still active. Please do not create duplicate questions. Your duplicate has been merged into here. (You may wish to edit to remove redundant information.)