zexen_lowe on 24 September 2008
| dtewi said: It is easy. What is infity minus infinity? Zero! What is Infity times one infityth? One! Or alternatively, what is infinty divided by infity? One! What is infinity times 1? Infinty!
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No, if you had studied limits, you'd know that
∞-∞ = Indefinite
∞/∞ = Indefinite
When you solve limits, usually all you have to do is avoid the indefinitions
For example:
lim(x->∞) 2x/(3x^2+3) should equal to ∞/∞, since both tend to infinte. Applying L'Hopital's rule:
lim(x->∞) 2x/(3x^2+3) = lim(x->∞) 2/(6x) = 2/∞ = 0
