xa(t) = t *exp(-αt) * u(t), α > 0;
xb(t) = t2 * u(t) * u(1 – t)
xc(t) = exp(-αt) * u(t) * u(1 – t), α > 0;
Fourier Transform Integrals are investigated. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.