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D( x )
x^11 = 0
x^11 = 0
x^11 = 0
1*x^11 = 0 // : 1
x^11 = 0
x = 0
x in (-oo:0) U (0:+oo)
5/(x^11) = 6/12 // - 6/12
5/(x^11)-(6/12) = 0
5/(x^11)-1/2 = 0
5*x^-11 = 1/2 // : 5
x^-11 = 1/10
-11 < 0
1/(x^11) = 1/10 // * x^11
1 = 1/10*x^11 // : 1/10
10 = x^11
x^11 = 10 // ^ 1/11
x = 10^(1/11)
x = 10^(1/11)
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