Asked by Redwood
on 16 May 2013

Dear Matlab experts,

I would like to get the b value in Matlab, but I got nothing in Matlab. I attached my coding below. Please let me know how to get the b value.

syms b G G1 M1 M2 M3 P1 P2 P3 b = 0:.0001:10; Out=solve(' G1 == G*(P1*exp(-b*M1/P1)/( P1*exp(-b*M1/P1)+ P2*exp(-b*M2/P2) + P3*exp(-b*M3/P3)))', b) G = [7340, 7194]; G1 = [4516.881, 5002.953]; M1 = [5222.328, 6009.419]; M2 = [3264.034, 2632.621]; M3 = [1264.034, 1632.621]; P1 = [3000, 3025]; P2 = [10000, 10051]; P3 = [5000, 5051]; Out=subs(Out)

Thank you very much in advance.

Sincerely,

Redwood

*No products are associated with this question.*

Answer by Walter Roberson
on 16 May 2013

Use

syms b

instead of assigning a numeric value to b.

Answer by Redwood
on 16 May 2013

Dear Walter,

Thank you very much for your help.

I already used syms b.

But I did not get anything in Matlab.

Sincerely yours,

Redwood

Walter Roberson
on 16 May 2013

Opportunities for recent engineering grads.

## 0 Comments