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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2276/2100 = 183.8/x // - 183.8/x
2276/2100-(183.8/x) = 0
2276/2100-183.8*x^-1 = 0
-183.8*x^-1 = -569/525 // : -183.8
x^-1 = 0.00589668
-1 < 0
1/(x^1) = 0.00589668 // * x^1
1 = 0.00589668*x^1 // : 0.00589668
169.58695401 = x^1
x = 169.58695401
x = 169.58695401
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