Question

hi..can anyone solve this? please
lim[x:+∞,ln(x)-(1)/(x^(2))]

Answer 1

Is this your question?
\[\large \lim_{x \rightarrow +\infty} \frac{\ln(x)-1}{x^2}\]

Answer 2

yes :)..how did u do that?

Answer 3

Apply l'hopital rule because it is infinity/infinity form

Answer 4

Do you know l'hopital rule ??

Answer 5

to tell the truth i dont know this..but i'll google it :)
Thank you very much for the help ^_^

Answer 6

It is very easy. Differentiate the numerator and differentiate the denomintor separately. That's all

Answer 7

*denominator

Answer 8

yeah..i got it ..thanks again :) i have a math test tomorrow and i have some excercises i do not understand.

Answer 9

OK :)

Answer 10

Do have a look here too. Very important before using l'hopital rule, read this
http://www.math.tamu.edu/~fulling/coalweb/lhop.htm