Let 1 = 2 in region 1 , defined by 2x + 3y - 4z > 1, while 2 = 5 in region 2 where 2x + 3y - 4z < 1 . In region 1, H1 = 50x - 30y + 20z /m . Find (a) H1; (b) H1; (c) H2; (d) H2; (e) theta1, the angle between H1 and 21;()theta2, the angle between H2 and 21 .



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