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D( x )
11*x <= 0
6*x <= 0
ln(6*x) = 0
11*x <= 0
11*x <= 0
11*x+0 <= 0 // - 0
11*x <= 0 // : 11
x <= 0/11
x <= 0
6*x <= 0
6*x <= 0
6*x+0 <= 0 // - 0
6*x <= 0 // : 6
x <= 0/6
x <= 0
ln(6*x) = 0
ln(6*x) = 0
ln(6*x) = ln(e^0)
6*x = e^0
6*x-e^0 = 0
6*x-1 = 0 // + 1
6*x = 1 // : 6
x = 1/6
x in (0:1/6) U (1/6:+oo)
ln(11*x)/ln(6*x) = 0
ln(11*x)/ln(6*x) = 0 // * ln(6*x)
ln(11*x) = 0
ln(11*x) = ln(e^0)
11*x = e^0
11*x-e^0 = 0
11*x-1 = 0 // + 1
11*x = 1 // : 11
x = 1/11
x = 1/11
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