9/n=n

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Solution for 9/n=n equation: 


D( n )

n = 0

n = 0

n = 0

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

9/n = n // - n

9/n-n = 0

9*n^-1-1*n^1 = 0

(9*n^0-1*n^2)/(n^1) = 0 // * n^2

n^1*(9*n^0-1*n^2) = 0

n^1

9-n^2 = 0

9-n^2 = 0

DELTA = 0^2-(-1*4*9)

DELTA = 36

DELTA > 0

n = (36^(1/2)+0)/(-1*2) or n = (0-36^(1/2))/(-1*2)

n = -3 or n = 3

n in { -3, 3} 

n in { -3, 3 }

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