Given a vector, t, of length n, write down the MATLAB expressions that will correctly compute the following. For this question you don't need to include the whole code, you only need to include a single Matlab expression for each signal. a. In(2+t+t²) b. e'(1 + cos(3t)) c. cos²(t) + sin²(t) d. tan(t) (this is the inverse tangent function) e. cot(t) f. sec²(t)+cot(t) - 1