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D( x )
2/x < 0
x = 0
x/2 < 0
2/x < 0
2/x < 0
2*x^-1 < 0
2*x^-1 < 0 // : 2
x^-1 < 0/2
x^-1 < 0
1/(x^1) < 0
x <> 0
1/(x^1) < 0 // * x^2
(x^2)/(x^1) < 0
x^1 < 0
x < 0
x in (-oo:0)
x = 0
x = 0
x/2 < 0
x/2 < 0
1/2*x+0 < 0 // - 0
1/2*x < 0 // : 1/2
x < 0/1/2
x < 0
x in (0:+oo)
((2/x)^0.5-(x/2)^0.5)^2 = 0
(2^0.5*x^-0.5-(1/2)^0.5*x^0.5)^2 = 0
2^0.5*x^-0.5-(1/2)^0.5*x^0.5 = 0
x^-0.5*(2^0.5-(1/2)^0.5*x) = 0
2^0.5-(1/2)^0.5*x = 0 // - 2^0.5
-(1/2)^0.5*x = -2^0.5 // : -(1/2)^0.5
x = (-2^0.5)/(-(1/2)^0.5)
x = (2^0.5)/((1/2)^0.5)
x^-0.5*(x-((2^0.5)/((1/2)^0.5))) = 0
(x^-0.5)^2*(x-((2^0.5)/((1/2)^0.5)))^2 = 0
( x-((2^0.5)/((1/2)^0.5)) )
x-((2^0.5)/((1/2)^0.5)) = 0 // + (2^0.5)/((1/2)^0.5)
x = (2^0.5)/((1/2)^0.5)
( x^-0.5 )
1*x^-0.5 = 0 // : 1
x^-0.5 = 0
x należy do O
x in { (2^0.5)/((1/2)^0.5), (2^0.5)/((1/2)^0.5) }
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