You apparently want to integrate with respect to ‘t’, however ‘t’ is not a variable in the functions you want to integrate.
You can use the integral function (or int for symbolic functions) to integrate other functions, however neither of the variables you want to integrate are defined as functions. Also, you immediately declare the arguments to your symbolic expressions as symbolic variables. This overwrites whatever the values of those variables are passed as arguments to your function.
Foir example:
x = 20;
syms x t
y = x^t
produces:
y =
x^t
If you want to integrate vectors or matrices, use the trapz (or cumtrapz) function.
