7/6a+9/7a+9/a

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Solution for 7/6a+9/7a+9/a equation: 


D( a )

a = 0

a = 0

a = 0

a in (-oo:0) U (0:+oo)

(7/6)*a+(9/7)*a+9/a = 0

103/42*a^1+9*a^-1 = 0

(103/42*a^2+9*a^0)/(a^1) = 0 // * a^2

a^1*(103/42*a^2+9*a^0) = 0

a^1

(103/42)*a^2+9 = 0

(103/42)*a^2+9 = 0

DELTA = 0^2-(4*9*(103/42))

DELTA = -618/7

DELTA < 0

a in { } 

a belongs to the empty set

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