(1/(4a))+((9a)/7)+(8/a)

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Solution for (1/(4a))+((9a)/7)+(8/a) equation: 


D( a )

a = 0

4*a = 0

a = 0

a = 0

4*a = 0

4*a = 0

4*a = 0 // : 4

a = 0

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

(9*a)/7+1/(4*a)+8/a = 0

9/7*a^1+33/4*a^-1 = 0

(9/7*a^2+33/4*a^0)/(a^1) = 0 // * a^2

a^1*(9/7*a^2+33/4*a^0) = 0

a^1

(9/7)*a^2+33/4 = 0

(9/7)*a^2+33/4 = 0

DELTA = 0^2-(4*(9/7)*(33/4))

DELTA = -297/7

DELTA < 0

a in { } 

a belongs to the empty set

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