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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(y/8)*y-44 = 2/x-2 // - 2/x-2
(y/8)*y-(2/x)-44+2 = 0
(y/8)*y-2*x^-1-44+2 = 0
-2*x^-1 = -(1/8*y^2-42) // : -2
x^-1 = (42-(1/8*y^2))/(-2)
-1 < 0
1/(x^1) = (42-(1/8*y^2))/(-2) // * x^1
1 = x^1*((42-(1/8*y^2))/(-2)) // : (42-(1/8*y^2))/(-2)
-2*(42-1/8*y^2)^-1 = x^1
x = -2*(42-1/8*y^2)^-1
x = -2*(42-1/8*y^2)^-1
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