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D( x )
(2*x)^2 = 0
x = 0
(2*x)^2 = 0
(2*x)^2 = 0
4*x^2 = 0 // : 4
x^2 = 0
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
1/x = (x-34)/((2*x)^2) // - (x-34)/((2*x)^2)
1/x-((x-34)/((2*x)^2)) = 0
(-1*(x-34))/(4*x^2)+1/x = 0
(-1*x*(x-34))/(4*x*x^2)+(1*4*x^2)/(4*x*x^2) = 0
1*4*x^2-1*x*(x-34) = 0
3*x^2+34*x = 0
3*x^2+34*x = 0
x*(3*x+34) = 0
3*x+34 = 0 // - 34
3*x = -34 // : 3
x = -34/3
x*(x+34/3) = 0
(x*(x+34/3))/(4*x*x^2) = 0
(x*(x+34/3))/(4*x*x^2) = 0 // * 4*x*x^2
x*(x+34/3) = 0
( x+34/3 )
x+34/3 = 0 // - 34/3
x = -34/3
( x )
x = 0
x in { 0}
x = -34/3
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