I have these equations. k and sigma are variables which i can set as i want, "j" is imaginary unit. I wrote this code:
d = 2;k = 2;syms Af(z) Ab(z)ode1 = diff(Af) == 1j*d*Af + 1j*k*Ab;ode2 = diff(Ab) == -1j*d*Ab - 1j*k*Af;odes = [ode1; ode2]cond1 = Af(0) == 1;cond2 = Ab(0) == 0;conds = [cond1; cond2];[AfSol(z), AbSol(z)] = dsolve(odes,conds)fplot(AfSol)hold onfplot(AbSol)grid onlegend('AfSol','AbSol','Location','best')
but graph is not painted. I don't know why.
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