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D( p )
p = 0
p = 0
p = 0
p in (-oo:0) U (0:+oo)
1/2-((3/2)*p) = 5/p // - 5/p
1/2-((3/2)*p)-(5/p) = 0
(-3/2)*p-5*p^-1+1/2 = 0
1/2*p^0-3/2*p^1-5*p^-1 = 0
(1/2*p^1-3/2*p^2-5*p^0)/(p^1) = 0 // * p^2
p^1*(1/2*p^1-3/2*p^2-5*p^0) = 0
p^1
(-3/2)*p^2+(1/2)*p-5 = 0
(-3/2)*p^2+(1/2)*p-5 = 0
DELTA = (1/2)^2-(-5*4*(-3/2))
DELTA = -119/4
DELTA < 0
p in { }
p belongs to the empty set
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