q-81/q=0

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Solution for q-81/q=0 equation: 


D( q )

q = 0

q = 0

q = 0

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

q-(81/q) = 0

q-81*q^-1 = 0

1*q^1-81*q^-1 = 0

(1*q^2-81*q^0)/(q^1) = 0 // * q^2

q^1*(1*q^2-81*q^0) = 0

q^1

q^2-81 = 0

q^2-81 = 0

DELTA = 0^2-(-81*1*4)

DELTA = 324

DELTA > 0

q = (324^(1/2)+0)/(1*2) or q = (0-324^(1/2))/(1*2)

q = 9 or q = -9

q in { -9, 9} 

q in { -9, 9 }

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