Problem 2.5 Demonstrate that (2.24) implies du/dt = 0. Hint: Form a scalar (dot) product of both sides of (2.24) with ji. du = Yu x B (2.24) dtProblem 2.7 Show that, if (2.38) is substituted into (2.36), then (2.32) and (2.33) are recov ered, assuming 0 = wot. cos sine 0 Rz (0) = - sin 0 cos0 0 (2.38) 0 0 1 " (t) = Pz (wot) /(0) (2.36) F (t ) = HI (t ) i + My (t ) y + H= (t)2 (2.32) with HI(t) = Hx(0) cos wot + My (0) sin wot My (t) = My(0) cos wot - Hz (0) sin wot Hz (t) = Hz (0) (2.33)