Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

|
Options

Flowers4Carlos
2005-09-17 03:56:10

hi there Nuu.... uu... ria!!!

just for reference reasons, here is the graph of logx :

as we can see, logx will go to ∞ when x gets larger and larger.  but ∞ is not a number and consequently we cannot evaluate log(∞).  however, if we know what happens to x as it approaches ∞, we can easily compute the limit of logt.  here is how:

lim(x->∞ ) logx
as x -> ∞, we know t = x -> (∞) = ∞
lim(t->∞ )logt = ∞

hope this helps!!!

núria
2005-09-16 23:59:21

#### Núria wrote:

I would like to know, if the limit of a logarithmic funcation, lim(log(ax/bx+c)), when x --> infinity, is log(lim(ax/bx+c)) when x--> infinty, due to the logarithmic function behavior.
Thanks!
Núria

Núria
2005-09-16 19:15:04

I would like to know, if the limit of a logarithmic funcation, lim(log(x)), when x --> infinity, is log(lim(x)) when x--> infinty, due to the logarithmic function behavior.

Thanks!
Núria