1. 1. aty, (a) A fluid moves two-dimensionally so that its velocity u is given by ure-tte where and are the unit vectors for the Cartesian coordinates (x, y). Obtain equations in terms of u and y alone for the following: (i) the streamline through the point (1,1) at t = 0, (ii) the particle path for a particle released from (1,1) at t = 0, (iii) the streakline at t = 0 formed by particles released from (1,1) during the interval t