English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories
5

ln(x)- ln(x+1)=1
please help. How do I do this and what should I get as my answer.

2007-12-16 07:15:17 · 10 answers · asked by getmywayjay 1 in Science & Mathematics Mathematics

10 answers

ln [ (x) / (x + 1) ] = 1
x / (x + 1) = e^1
x = e (x + 1)
x = e x + e
(e - 1) x = - e
x = - e / (e - 1)
x = e / (1 - e)

2007-12-20 03:05:24 · answer #1 · answered by Como 7 · 2 0

x Is 1 so 1-1+1=1

2007-12-16 07:19:15 · answer #2 · answered by Anonymous · 0 2

Re-Edit- ln (x) - ln (x+1)=1
so then ln {x/(x+1)}=1

ln is in base 10, so that means that since log (10) equals one, then x/(x+1)=10, then
x= 10x+10, then
-9x=10, then
x= -10/9 then
that means log{(-10/9)/(-1/9) or log (10)=1.
http://www.sosmath.com/algebra/logs/log4/log44/log442/log442.html

Sorry about that ...it got me very confused..

2007-12-16 07:23:16 · answer #3 · answered by Anonymous · 1 0

x = 0

2007-12-16 07:17:58 · answer #4 · answered by Xavier 4 · 1 2

its really simple.
subtract the 1 next to the plus sign from the 1 next to the equal sign.
x=0
to check your answer plug 0 (or your answer) into x
(0+1)=1.

2007-12-16 07:21:47 · answer #5 · answered by Kellie Timp 2 · 0 2

x=0
o+1=1

2007-12-16 07:20:17 · answer #6 · answered by sarah ;) 5 · 0 2

I think it is impossible.

ln(x)-ln(x+1) = ln(x/(x+1))

so

ln[x/(x+1)] = 1


e = x/(x+1)

x = -e/(e-1)

x cannot be negative, because its not in the domain for ln(x).

no solution

2007-12-16 07:24:48 · answer #7 · answered by b1gmuff 3 · 1 2

If a and b are two numbers, ln(a)-ln(b)=ln(a/b)
ln(x)-ln(x+1)=ln(x/(x+1))=1
x/(x+1)=e (by definition of logs)
x=(x+1)e
x=xe+e
x-xe=e
x(1-e)=e
x=e/(1-e)

2007-12-16 07:24:35 · answer #8 · answered by cidyah 7 · 0 3

In(x)-In(x+1)=1
Inx-Inx+1=1
-1 -1

x=0

sorry, bub
pretty sure it's right?

2007-12-16 07:19:45 · answer #9 · answered by Anonymous · 0 2

Use a scientific calculator that shud be easy...

2007-12-16 07:19:01 · answer #10 · answered by EmeryJae 2 · 0 3

fedest.com, questions and answers