Question

From here, I’m trying to solve a symbolic system of equations like this

syms x y z;
[x, y, z] = solve('z = 4*x', 'x = y', 'z = x^2 + y^2')
x =
0
2

y =
0
2

z =
0
8

except that my equations are generated at different points in the m-file and with random coefficients. My question is how can I accomplish the following…

// Generate the first equation.
n = *random number generated here*;
E1 = (z == n*x + 2*n);   // <--- How to save this symbolic equation to use in "solve(...)" later?

// Other work, generate other eqs.
...

// Solve system of eqs.
[x, y, z] = solve( E1 , E2, E3)   // What/How to call/use the previously saved symbolic equations.

Thanks for the help!

EDIT

Updated to better explain objective.

Answer 1

Use sprintf if you want to keep the randomly generated value of n for later use with solve:

n = *random number generated here*;
E1 = (z == n*x + 2*n);
Eq1 = sprintf('z == %f*x + 2*%f',n,n);

You can play with the parameters on %f to see how much precision you want to include.