(1-1/n)(1-2/n)

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Solution for (1-1/n)(1-2/n) equation: 


D( n )

n = 0

n = 0

n = 0

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

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

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

( 1-2*n^-1 )

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

n^-1 = 1/2

-1 < 0

1/(n^1) = 1/2 // * n^1

1 = 1/2*n^1 // : 1/2

2 = n^1

n = 2

( 1-n^-1 )

-1*n^-1 = -1 // : -1

n^-1 = 1

-1 < 0

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

1 = 1*n^1 // : 1

1 = n^1

n = 1

n in { 2, 1 }

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