Exotisa 27. calculate f ds. where f and x are as Z y. z) = = (t,2t, S 2 = t3/2), I S 3 4. y. z) = 3x X(t) = (cos4t,sin4t, 31), . x(t) = cos3t, e2t sin 3'. e2t), 6. f (x.y.z) (2',0.0) ifOst (2.3' -3,0) if I fts 2 (2.3.21-4) if2sts3 7 yl/2 +2Z2, (f. O) if O I (J, 1.1-1) if I stf3