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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-(11664/(s^2)) = 0
2*s-11664*s^-2 = 0
2*s^1-11664*s^-2 = 0
(2*s^3-11664*s^0)/(s^2) = 0 // * s^4
s^2*(2*s^3-11664*s^0) = 0
s^2
2*s^3-11664 = 0
{ 1, -1, 2, -2, 3, -3, 4, -4, 6, -6, 8, -8, 9, -9, 12, -12, 16, -16, 18, -18, 24, -24, 27, -27, 36, -36, 48, -48, 54, -54, 72, -72, 81, -81, 108, -108, 144, -144, 162, -162, 216, -216, 243, -243, 324, -324, 432, -432, 486, -486, 648, -648, 729, -729, 972, -972, 1296, -1296, 1458, -1458, 1944, -1944, 2916, -2916, 3888, -3888, 5832, -5832, 11664, -11664 }
1
s = 1
2*s^3-11664 = -11662
1
-1
s = -1
2*s^3-11664 = -11666
-1
2
s = 2
2*s^3-11664 = -11648
2
-2
s = -2
2*s^3-11664 = -11680
-2
3
s = 3
2*s^3-11664 = -11610
3
-3
s = -3
2*s^3-11664 = -11718
-3
4
s = 4
2*s^3-11664 = -11536
4
-4
s = -4
2*s^3-11664 = -11792
-4
6
s = 6
2*s^3-11664 = -11232
6
-6
s = -6
2*s^3-11664 = -12096
-6
8
s = 8
2*s^3-11664 = -10640
8
-8
s = -8
2*s^3-11664 = -12688
-8
9
s = 9
2*s^3-11664 = -10206
9
-9
s = -9
2*s^3-11664 = -13122
-9
12
s = 12
2*s^3-11664 = -8208
12
-12
s = -12
2*s^3-11664 = -15120
-12
16
s = 16
2*s^3-11664 = -3472
16
-16
s = -16
2*s^3-11664 = -19856
-16
18
s = 18
2*s^3-11664 = 0
18
s-18
2*s^2+36*s+648
2*s^3-11664
s-18
36*s^2-2*s^3
36*s^2-11664
648*s-36*s^2
648*s-11664
11664-648*s
0
2*s^2+36*s+648 = 0
DELTA = 36^2-(2*4*648)
DELTA = -3888
DELTA < 0
s in { 18}
s = 18
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