ghasem
Posts:
72
Registered:
4/13/13


dow define a numeric variable (no symbolic)?
Posted:
May 9, 2013 3:19 AM


Hi I have one question. I have a long equation including a unknown and three intermediate parameter. I want to write my equation step by step,as following:
% eps1 , k1,k2,k0 are known complex constant and bet is my unknown. gam = sqrt(bet^2  k1^2); T = sqrt(bet^2  k2^2); tau = sqrt(bet^2  k0^2); % X1 = gam*besseli(0,gam); X2 = T*(eps1*besseli(1,gam)(1eps1)*gam.*besseli(0,gam));
X3 = T*tau*bessely(0,T)*besselk(1,tau)... tau^2*bessely(1,T)*besselk(0,tau); X4 = T*tau*besselj(0,T)*besselk(1,tau)... tau^2*besselj(1,T)*besselk(0,tau);
obviously,I get this error: ??? Undefined function or variable 'bet'. because I don't define bet in gam,T,tau expressions. how define "bet" as a numeric unknown (I don't want use from "syms bet")?

