4/18-18/n

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Solution for 4/18-18/n equation: 


D( n )

n = 0

n = 0

n = 0

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

4/18-(18/n) = 0

4/18-18*n^-1 = 0

-18*n^-1 = -2/9 // : -18

n^-1 = 1/81

-1 < 0

1/(n^1) = 1/81 // * n^1

1 = 1/81*n^1 // : 1/81

81 = n^1

n = 81

n = 81

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