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D( s )
s^2 = 0
s^2 = 0
s^2 = 0
1*s^2 = 0 // : 1
s^2 = 0
s = 0
s in (-oo:0) U (0:+oo)
2*s-(5488/(s^2)) = 0
2*s-5488*s^-2 = 0
2*s^1-5488*s^-2 = 0
(2*s^3-5488*s^0)/(s^2) = 0 // * s^4
s^2*(2*s^3-5488*s^0) = 0
s^2
2*s^3-5488 = 0
{ 1, -1, 2, -2, 4, -4, 7, -7, 8, -8, 14, -14, 16, -16, 28, -28, 49, -49, 56, -56, 98, -98, 112, -112, 196, -196, 343, -343, 392, -392, 686, -686, 784, -784, 1372, -1372, 2744, -2744, 5488, -5488 }
1
s = 1
2*s^3-5488 = -5486
1
-1
s = -1
2*s^3-5488 = -5490
-1
2
s = 2
2*s^3-5488 = -5472
2
-2
s = -2
2*s^3-5488 = -5504
-2
4
s = 4
2*s^3-5488 = -5360
4
-4
s = -4
2*s^3-5488 = -5616
-4
7
s = 7
2*s^3-5488 = -4802
7
-7
s = -7
2*s^3-5488 = -6174
-7
8
s = 8
2*s^3-5488 = -4464
8
-8
s = -8
2*s^3-5488 = -6512
-8
14
s = 14
2*s^3-5488 = 0
14
s-14
2*s^2+28*s+392
2*s^3-5488
s-14
28*s^2-2*s^3
28*s^2-5488
392*s-28*s^2
392*s-5488
5488-392*s
0
2*s^2+28*s+392 = 0
DELTA = 28^2-(2*4*392)
DELTA = -2352
DELTA < 0
s in { 14}
s = 14
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