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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
abs((17*x-4)/x) = 16 // - 16
abs((17*x-4)/x)-16 = 0
abs((17*x-4)/x)-16 = 0
x in (-oo:+oo)
abs((17*x-4)/x)
(17*x-4)/x >= 0
( 17*x-4 )
17*x-4 >= 0 // + 4
17*x >= 4 // : 17
x >= 4/17
( x )
x+0 >= 0 // - 0
x >= 0
(-oo:0)(0:4/17)(4/17:+oo)17*x-4--+x-++
x in (-oo:0> U <4/17:+oo)
(17*x-4)/x-16 = 0
x in (0:4/17)
-((17*x-4)/x)-16 = 0
abs((17*x-4)/x)-16 = 0
/| (17*x-4)/x-16 = 0 i x in (-oo:0> U <4/17:+oo)| -((17*x-4)/x)-16 = 0 i x in (0:4/17)
x in (-oo:0> U <4/17:+oo)
(17*x-4)/x-16 = 0
(17*x-4)/x+(-16*x)/x = 0
17*x-16*x-4 = 0
x-4 = 0
(x-4)/x = 0
(x-4)/x = 0 // * x
x-4 = 0
x-4 = 0 // + 4
x = 4
x in (0:4/17)
-((17*x-4)/x)-16 = 0
(-1*(17*x-4))/x-16 = 0
(-1*(17*x-4))/x+(-16*x)/x = 0
-1*(17*x-4)-16*x = 0
4-33*x = 0
(4-33*x)/x = 0
(4-33*x)/x = 0 // * x
4-33*x = 0
4-33*x = 0 // - 4
-33*x = -4 // : -33
x = -4/(-33)
x = 4/33
x in { 4, 4/33 }
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