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D( x )
9*e^3*x+2 = 0
9*e^3*x+2 = 0
9*e^3*x+2 = 0
9*e^3*x+2 = 0 // - 2
9*e^3*x = -2 // : 9*e^3
x = -2/(9*e^3)
x in (-oo:-2/(9*e^3)) U (-2/(9*e^3):+oo)
y = 100/(9*e^3*x+2) // - 100/(9*e^3*x+2)
y-(100/(9*e^3*x+2)) = 0
y-100*(9*e^3*x+2)^-1 = 0
y-100/(9*e^3*x+2) = 0
(y*(9*e^3*x+2))/(9*e^3*x+2)-100/(9*e^3*x+2) = 0
y*(9*e^3*x+2)-100 = 0
9*e^3*x*y+2*y-100 = 0
(9*e^3*x*y+2*y-100)/(9*e^3*x+2) = 0
(9*e^3*x*y+2*y-100)/(9*e^3*x+2) = 0 // * 9*e^3*x+2
9*e^3*x*y+2*y-100 = 0
9*e^3*x*y+2*y-100 = 0 // - 2*y-100
9*e^3*x*y = -(2*y-100) // : 9*e^3*y
x = (-(2*y-100))/(9*e^3*y)
x = (100-(2*y))/(9*e^3*y)
x = (100-(2*y))/(9*e^3*y)
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