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D( x )
ln(4*x) = 0
11*x <= 0
4*x <= 0
ln(4*x) = 0
ln(4*x) = 0
ln(4*x) = ln(e^0)
4*x = e^0
4*x-e^0 = 0
4*x-1 = 0 // + 1
4*x = 1 // : 4
x = 1/4
11*x <= 0
11*x <= 0
11*x+0 <= 0 // - 0
11*x <= 0 // : 11
x <= 0/11
x <= 0
4*x <= 0
4*x <= 0
4*x+0 <= 0 // - 0
4*x <= 0 // : 4
x <= 0/4
x <= 0
x in (0:1/4) U (1/4:+oo)
ln(11*x)/ln(4*x) = 0
ln(11*x)/ln(4*x) = 0 // * ln(4*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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