the corner points of the feasible region determined by y <= 8, 2x + y >= 8, x >= 0, y >= 0 are a(0, 8), b(4, 0) and c( 8 , 0). if the objective function z = ax + by has its maximum value on the line segment ab, then the relation between a and b is : (2) a = 2b (4) 8b + 4 = a (1) 8a + 4 = b (3) b = 2a if t = e ^ (2x) and y = ln(t ^ 2) then (d ^ 2 * y)/(d * x ^ 2) is   If t = e2x and y = ln(t ^ 2) then (d ^ 2 * y)/(d * x ^ 2) is: by Himanshu Singh