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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2/x = x/32 // - x/32
2/x-(x/32) = 0
2*x^-1-1/32*x^1 = 0
(2*x^0-1/32*x^2)/(x^1) = 0 // * x^2
x^1*(2*x^0-1/32*x^2) = 0
x^1
(-1/32)*x^2+2 = 0
(-1/32)*x^2+2 = 0
DELTA = 0^2-(2*4*(-1/32))
DELTA = 1/4
DELTA > 0
x = ((1/4)^(1/2)+0)/(2*(-1/32)) or x = (0-(1/4)^(1/2))/(2*(-1/32))
x = -8 or x = 8
x in { -8, 8}
x in { -8, 8 }
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