please use Octave to solve. Thank you

5. Practice: a. (30 points) Follow steps and examples and 1, 2, 3, and 4. practice and show results below. b. (30 points) syms stab w Laplace(a) Laplace (t^2) darlase (t^9) Laplace (exp(-b*t)) Laplace (sin(w*t)) Laplase (cos(wit)) c. (30 points) SUS. Stabw Mardace (1737) llarlase (2/(wts)) dlaplace(s/(s^2+4) ) MARLage (exp(-b*t)) Starlased/(s^2 + w*2)) MARIAGES/(s^2 + w*2)) Coolmion