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Posted by **angie** on Monday, January 2, 2012 at 11:37am.

x^3 -1/x^2 -1

lim as x->-1

x^3 -1/x^2 -1

lim as x->1

x^3 -1/x^2 -1

- math/calculus -
**Steve**, Monday, January 2, 2012 at 12:26pmx^3 - 1 = (x-1)(x^2 + x + 1)

x^2 - 1 = (x-1)(x+1)

as x->1, you get (1+1+1)/(1+1) = 3/2

As x -> -1 you get 1/0, + or - depending on the direction.

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