MATLAB: Undefined funcion variable error

plot

 % Constants
beta=5;
alfa = 2.*beta/(beta+1);
tau1=4.4;
tau2=5;
Tc=1.24;
Ta=0.66;
g=0;
gamma=alfa.*(2-exp(-tau1));
% Time frames
t1=0:0.01:tau1;
t11 = tau1:0.01:8;
t2 = tau1:0.01:tau2;
t22 = tau2:0.01:8;
t3 = tau2:0.01:8;
t'==t1./Ta
z'=1
Va=@(t)alfa.*exp(-(u.*t')).*(1-g.*z') - (alfa-1);
Va1=Va(t1);
plot(t1,Va1);
Undefined function or variable 't'.

Best Answer

t=t1./Ta % you define t here 
z=1
Va=@(t)alfa.*exp(-(u.*t)).*(1-g.*z) - (alfa-1); % also you have a @(t)?? you have some problem with naming variables
Va1=Va(t1);
plot(t1,Va1);
Notes:
  • ' in matlab denotes complex conjugate transpose
  • to assign a variable to a numerical number/s use "=" not "=="
  • u is not defined in your code
  • I strongly suggest you to read anonymous function (usage)
  • Also don't name the variable gamma it contradicts with matlab's in-built function gamma
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