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D( X )
X = 0
X = 0
X = 0
X in (-oo:0) U (0:+oo)
9*X+(5/3)*X-(3*X)-(7/X)-6+10 = 0
9*X+(5/3)*X-3*X-7*X^-1-6+10 = 0
23/3*X^1-7*X^-1+4*X^0 = 0
(23/3*X^2+4*X^1-7*X^0)/(X^1) = 0 // * X^2
X^1*(23/3*X^2+4*X^1-7*X^0) = 0
X^1
(23/3)*X^2+4*X-7 = 0
(23/3)*X^2+4*X-7 = 0
DELTA = 4^2-(-7*4*(23/3))
DELTA = 692/3
DELTA > 0
X = ((692/3)^(1/2)-4)/(2*(23/3)) or X = (-(692/3)^(1/2)-4)/(2*(23/3))
X = 3/46*((692/3)^(1/2)-4) or X = -3/46*((692/3)^(1/2)+4)
X in { -3/46*((692/3)^(1/2)+4), 3/46*((692/3)^(1/2)-4)}
X in { -3/46*((692/3)^(1/2)+4), 3/46*((692/3)^(1/2)-4) }
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