e 2 2 The trajectory of a particle is given by r(t) = (et , cos(7t + 1), e't ). Find its velocity, speed, and acceleration. (Your instructors prefer angle bracket notation for vectors.) a 2 r2 v(r) = 2:6 ,TSin(Tf+1).'2re ./ speed = X 3m = Find the point of intersection of the curves r,(t) = (t, 2t + 3, t ) and r,(t) = (t