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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
5/x < (3-x)/2 // - (3-x)/2
5/x-((3-x)/2) < 0
(-1*(3-x))/2+5/x < 0
(-1*x*(3-x))/(2*x)+(2*5)/(2*x) < 0
2*5-1*x*(3-x) < 0
x^2-3*x+10 < 0
x^2-3*x+10 = 0
x^2-3*x+10 = 0
DELTA = (-3)^2-(1*4*10)
DELTA = -31
DELTA < 0
1 = 0
1/(2*x) < 0
1/(2*x) < 0 // * (2*x)^2
2*x < 0
( 2 )
2 < 0
x belongs to the empty set
( x )
x+0 < 0 // - 0
x < 0
(-oo:0) (0:+oo) 2 + + x - +
x in (-oo:0)
(-oo:0)
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