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D( x )
((x^1)/32)^4 = 0
((x^1)/32)^4 = 0
((x^1)/32)^4 = 0
(x/32)^4 = 0
1/1048576*x^4 = 0 // : 1/1048576
x^4 = 0
x = 0
x in (-oo:0) U (0:+oo)
(((x^1)/2)*x^14)/(((x^1)/32)^4) = 0
((x/2)*x^14)/((x/32)^4) = 0
524288*x^11 = 0 // : 524288
x^11 = 0
x = 0
x in { 0}
x belongs to the empty set
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