Why is it that lim x->∞ while lim x->-∞ ∞? They both simplify to the same function but one gives a numerical value while the other one doesn't.

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- Nov 29th 2011, 10:54 AMBarthaynlim x->∞/-∞?
Why is it that lim x->∞ while lim x->-∞ ∞? They both simplify to the same function but one gives a numerical value while the other one doesn't.

- Nov 29th 2011, 12:00 PMPlatoRe: lim x->∞/-∞?
- Nov 29th 2011, 12:05 PMSorobanRe: lim x->∞/-∞?
Hello, Barthayn!

I don't understand your problem.

I get only one answer.

Quote:

. . .

We have: .

Multiply by

. .

Divide numerator and denominator by

. .

. .

Therefore: .

- Nov 29th 2011, 12:40 PMOpalgRe: lim x->∞/-∞?