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D( x )
((x^1)/6)^-2 = 0
(x^1)/6 = 0
((x^1)/6)^-2 = 0
((x^1)/6)^-2 = 0
(x/6)^-2 = 0
36*x^-2 = 0 // : 36
x^-2 = 0
x należy do O
(x^1)/6 = 0
(x^1)/6 = 0
x/6 = 0
1/6*x = 0 // : 1/6
x = 0
x in (-oo:0) U (0:+oo)
(((x^1)/3)^5)/(((x^1)/6)^-2) = 0
((x/3)^5)/((x/6)^-2) = 0
1/8748*x^7 = 0 // : 1/8748
x^7 = 0
x = 0
x in { 0}
x belongs to the empty set
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