Can someone help me out with this MATLAB question

Define then evaluate the following functions symbolically in MATLAB by defining symbolic functions: e.g. syms x: syms f(x): f (x) = x^2: f (1) this would return f (x) evaluated at x = 1: f(x, y) = xy^3 + 3 sin(Squareroot 4xy) + 0.5: @ x = 3.5, y = 4.5 X(s) = s/s^2 + s + 1: @ s = 2j Y(s) = (s + 1)e^-2.3s/s^3 + 4s^2 + 3s + K: @ s = 1 + 2j, K remains