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D( w )
w = 0
w = 0
w = 0
w in (-oo:0) U (0:+oo)
10 > -16/w // + -16/w
10-(-16/w) > 0
16*w^-1+10 > 0
16*w^-1 > -10
16*w^-1 > -10 // : 16
w^-1 > -10/16
w^-1 > -5/8
1/(w^1) > -5/8
w <> 0
1/(w^1) > -5/8 // * w^2
(w^2)/(w^1) > -5/8*w^2
w^1 > -5/8*w^2
5/8*w^2+w > 0
w^1*(5/8*w+1) > 0
w < 0
-(abs(w))^1*(1-5/8*(abs(w))^1) > 0 // : -(abs(w))^1
1-5/8*(abs(w))^1 < 0
-5/8*(abs(w))^1 < -1 // : -5/8
(abs(w))^1 > -1/(-5/8)
(abs(w))^1 > 8/5 // ^ 1/1
abs(w) > (8/5)^(1/1)
abs(w) > 8/5
w in (-oo:-8/5)
w < 0
w > 0
w^1*(1-(-5/8*w^1)) > 0 // : w^1
1-(-5/8*w^1) > 0
1 > -5/8*w^1 // : -5/8
1/(-5/8) < w^1 // ^ 1/1
(1/(-5/8))^(1/1) < w
w in (0:+oo)
w > 0
w in (-oo:-8/5) U (0:+oo)
w in (-oo:-8/5) U (0:+oo)
(-oo:-8/5) U (0:+oo)
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