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D( a )
a = 0
a = 0
a = 0
a in (-oo:0) U (0:+oo)
3*a-2 = a+41/a+1 // - a+41/a+1
3*a-a-(41/a)-2-1 = 0
3*a-a-41*a^-1-2-1 = 0
2*a^1-41*a^-1-3*a^0 = 0
(2*a^2-3*a^1-41*a^0)/(a^1) = 0 // * a^2
a^1*(2*a^2-3*a^1-41*a^0) = 0
a^1
2*a^2-3*a-41 = 0
2*a^2-3*a-41 = 0
DELTA = (-3)^2-(-41*2*4)
DELTA = 337
DELTA > 0
a = (337^(1/2)+3)/(2*2) or a = (3-337^(1/2))/(2*2)
a = (337^(1/2)+3)/4 or a = (3-337^(1/2))/4
a in { (3-337^(1/2))/4, (337^(1/2)+3)/4}
a in { (3-337^(1/2))/4, (337^(1/2)+3)/4 }
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