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D( X )
X^2 = 0
X^2 = 0
X^2 = 0
1*X^2 = 0 // : 1
X^2 = 0
X = 0
X in (-oo:0) U (0:+oo)
4*X-(32/(X^2)) = 0
4*X-32*X^-2 = 0
4*X^1-32*X^-2 = 0
(4*X^3-32*X^0)/(X^2) = 0 // * X^4
X^2*(4*X^3-32*X^0) = 0
X^2
4*X^3-32 = 0
{ 1, -1, 2, -2, 4, -4, 8, -8, 16, -16, 32, -32 }
1
X = 1
4*X^3-32 = -28
1
-1
X = -1
4*X^3-32 = -36
-1
2
X = 2
4*X^3-32 = 0
2
X-2
4*X^2+8*X+16
4*X^3-32
X-2
8*X^2-4*X^3
8*X^2-32
16*X-8*X^2
16*X-32
32-16*X
0
4*X^2+8*X+16 = 0
DELTA = 8^2-(4*4*16)
DELTA = -192
DELTA < 0
X in { 2}
X = 2
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