‘My question is, what purpose does @(t,Z) serve?’
It creates a function handle that specifies that ‘t’ and ‘Z’ are arguments to your function. This is what the MATLAB ODE solvers require as their function call syntax.
Note that your function doesn’t have to use ‘t’ in its code or its argument list, but ‘t’ must be in the argument list presented to the ODE solvers, or your ODE solver call will throw a ‘Too many input arguments.’ error when the ODE solver attempts to pass ‘t’ to it as an argument.
