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D( x )
x^2 = 0
x^2 = 0
x^2 = 0
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in (-oo:0) U (0:+oo)
x*((2*e^(2*x))/(x^2)) = 0
x = 0
(2*e^(2*x))/(x^2) = 0
(2*e^(2*x))/(x^2) = 0 // * x^2
2*e^(2*x) = 0
e^(2*x) = 0
x naleu017Cy do O
2*e^(2*x) = 0 <=> 2 = 0 or 2*e^(2*x) = 0 <=> e^(2*x) = 0
x*((2*e^(2*x))/(x^2)) = 0 <=> x = 0 or x*((2*e^(2*x))/(x^2)) = 0 <=> (2*e^(2*x))/(x^2) = 0
x in { 0}
x belongs to the empty set
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