With reference to Fig. 4-19, find E1 if E2 = x3 – y2 + z2 (V/m)

With reference to Fig. 4-19, find E1 if E2 = x3 – y2 + z2 (V/m)

With reference to Fig. 4-19, find E1 if E2 = x3 – y2 + z2 (V/m), 1 = 20, 2 = 180, and the boundary has a surface charge density s = 3.54 x10-11 (C/m2). What angle does E2 make with the z-axis?