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Hi @Annie
RLC Circuit analysis typically involves a dynamic system. Thus, you will need to model it in the form of a differential equation and then solve it either using ode45 or dsolve (if your professor insists on seeing the analytical solution).
If the circuit consists solely of resistors, you can apply Kirchhoff's circuit laws and then use the equationsToMatrix() function to convert the linear equations to matrix form. After that, you can easily solve the matrix form of the equations using the linsolve() function.
Here's a simple demo:
syms x y z
eqns = [x + y - 2*z == 0, % Mesh #1
x + y + z == 1, % Mesh #2
2*y - z == -5]; % Mesh #3
[A, b] = equationsToMatrix(eqns)
X = linsolve(A, b)
