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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
1-(7.33/x) = 0.35 // - 0.35
1-(7.33/x)-0.35 = 0
1-7.33*x^-1-0.35 = 0
-7.33*x^-1 = -0.65 // : -7.33
x^-1 = 0.08867667
-1 < 0
1/(x^1) = 0.08867667 // * x^1
1 = 0.08867667*x^1 // : 0.08867667
11.27692323 = x^1
x = 11.27692323
x = 11.27692323
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