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x ≥ 1 , y ≥ 2 ,
pertidaksamaan 1
x + y ≤ 6
jika x = 0 maka y
y = 6
jika y = 0 maka x
x = 6
pertidaksamaan 2
2x + 3y ≤ 18
jika x = 0 maka y
3y = 18
y = 18/3
y = 6
jika y = 0 maka x
2x = 18
x = 18/2
x = 9
titik B
x + y = 6 dan y = 2
x + 2 = 6
x = 3
titik c
x + y = 6 dan x = 1
1 + y = 6
y = 6 -1
y = 5
nilai minimum dari fungsi objektif
f(x,y) = 3x + 4y
a.) (1,2) = 3(1) + 4(2) = 3 + 8 = 11
b.) ( 3,2) = 3(3) + 4(2) = 9 + 8 = 17
c.) ( 1, 5) = 3(1) + 4( 5) = 3 + 20 = 23
nilai minimunya adalah 11