subs( ) command would not work

Hello everyone,

Real simple. At the end of the following code, I am trying to substitute my symbolic variables with actual numbers. The commando seems to work(does not give me an error) but once i print the matrices, it would not show the substituted variables. Check this out:

subs(A,a,0.09);subs(A,b,0.09);subs(A,c,100);subs(A,k,4.0);subs(A,x1,1);
subs(A,x2,0);subs(A,x3,1);subs(A,x4,40);subs(A,x5,0);subs(A,x6,1);
subs(A,x7,0);subs(A,u1,.08);subs(A,u2,.04);

subs(B,a,0.09);subs(B,b,0.09);subs(B,c,100);subs(B,k,4.0);subs(B,x1,1);
subs(B,x2,0);subs(B,x3,1);subs(B,x4,40);subs(B,x5,0);subs(B,x6,1);
subs(B,x7,0);subs(B,u1,.08);subs(B,u2,.04);

where A and B are matrices and those symbolic variables are in the matrix functions

[Walter Roberson]

The code here is a subset of https://www.mathworks.com/matlabcentral/answers/397685-subs-command-would-not-work but this one has an answer.

Answer 1

[Sergey Kasyanov]

Hello,

you should to reassign variable after substitution:

A=subs(A,a,1);

[Kevin Brinneman]

Thank you, it worked!