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maka:
x + y = 94
y = 94 - x
K = x.y
K = x(94 - x)
K = 94x - x²
Nilai stasioner
K' = 0
94 - 2x = 0
x = 47
Jadi nilai maksimum K
K = 94x47 - 47²
= 4418 - 2209
= 2209