It is given that ξ = {x: x is a positive integer such that 3 ˂ x ≤ 18},
Y = {x: x is a multiple of 3}
Z = {x: x is a multiple of 9}.

(a) List all the elements in ξ, Y and Z in set notation.
(b) Draw a Venn diagram to represent the sets ξ, Y and Z.
(c) From the Venn diagram, find;
(i) Y ∪ Z
(ii) Y ∩ Z

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints

explanation:

step-by-step explanation:

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