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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(3*c)/x+459/x = 4*d+23*p // - 4*d+23*p
(3*c)/x-(4*d)-(23*p)+459/x = 0
(3*c)/x-4*d-23*p+459/x = 0
3*c*x^-1-4*d-23*p+459*x^-1 = 0
t_1 = x^-1
3*c*t_1^1-4*d-23*p+459*t_1^1 = 0
459*t_1-4*d-23*p = 0 // + -4*d-23*p
459*t_1 = -(-4*d-23*p) // : 459
t_1 = (-(-4*d-23*p))/459
t_1 = (-(-4*d-23*p))/459
x^-1-((-(-4*d-23*p))/459) = 0
(1/459)*(-4*d-23*p)+x^-1 = 0
1/459*(-4*d-23*p)+1/x = 0
(1/459*x*(-4*d-23*p))/x+1/x = 0
1/459*x*(-4*d-23*p)+1 = 0
1-4/459*d*x-23/459*p*x = 0
1-4/459*d*x-23/459*p*x = 0
1-23/459*p*x = 0 // - 1
-23/459*p*x = -1 // : -23/459*p
x = -1/(-23/459*p)
x = 459/23*p^-1
x-459/23*p^-1 = 0
(x-459/23*p^-1)/x = 0
(x-459/23*p^-1)/x = 0 // * x
x-459/23*p^-1 = 0
x-459/23*p^-1 = 0 // + -459/23*p^-1
x = -(-459/23*p^-1)
x = 459/23*p^-1
x = 459/23*p^-1
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