3. Calculate the Frenet apparatus (T, K, N, B, and t) of the following curves: *a. a(s) = ((1+s)³/2, (1 − s)³/2, s), s€ (-1,1) b. a(t)=(e (sint + cost), ½e' (sint - cost), e') *c. a(t)=(√√1+1², 1, In(t + √√1+1²)) d. a(t)=(e' cost, e' sint, e') e. a(t) = (cosht,sinht,t) f. a(t) = (1,12/2,1√√1+ 12+ In(t + √√1+12)) g. a(t)=(t-sint cost, sin² 1, cost), tЄ (0,л)