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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2.77/0.00117 = 3.62/x // - 3.62/x
2.77/0.00117-(3.62/x) = 0
2.77/0.00117-3.62*x^-1 = 0
-3.62*x^-1 = -2367.52136752 // : -3.62
x^-1 = 654.01142749
-1 < 0
1/(x^1) = 654.01142749 // * x^1
1 = 654.01142749*x^1 // : 654.01142749
0.00152903 = x^1
x = 0.00152903
x = 0.00152903
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