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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
6/x = 2/309.6 // - 2/309.6
6/x-(2/309.6) = 0
6/x-0.00645995 = 0
6*x^-1 = 0.00645995 // : 6
x^-1 = 0.00107666
-1 < 0
1/(x^1) = 0.00107666 // * x^1
1 = 0.00107666*x^1 // : 0.00107666
928.79832073 = x^1
x = 928.79832073
x = 928.79832073
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