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D( X )
X = 0
X = 0
X = 0
X in (-oo:0) U (0:+oo)
2 = (9.5^1)/X // - (9.5^1)/X
2-((9.5^1)/X) = 0
2-9.5*X^-1 = 0
-9.5*X^-1 = -2 // : -9.5
X^-1 = 0.21052632
-1 < 0
1/(X^1) = 0.21052632 // * X^1
1 = 0.21052632*X^1 // : 0.21052632
4.74999991 = X^1
X = 4.74999991
X = 4.74999991
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