Question

Logarithms help

Answer 1

I keep getting a wrong answer:
- The answer is x=3 by the way.

Answer 2

okay this is one of the log rules
log(A^B) = B Log A

Answer 3

are you aware of this?

Answer 4

Yes

Answer 5

thus we can reduce this problem to (x-1)^2=(x+1)

Answer 6

(x-1)^2=(x+1)
3 is definitely a solution of this

Answer 7

u can tell by checking (3-1)^2=4 and (3+1)=4

Answer 8

Oh, okay, thank you

Answer 9

but to actually solve it expand the square and collect like terms

Answer 10

Yeah, I got it now :D

Answer 11

okay :)

Answer 12

So, x=0 would be an extraneous root, Im guessing?, because log(0) cannot exist?

Answer 13

yes x=0 is also a solution!

Answer 14

yep

Answer 15

it is a solution of the quadratic but not defined on the log

Answer 16

forever its not undefined since ln(0) does converge to -inf

Answer 17

however*

Answer 18

i guess i should say diverge to -inf

Answer 19

@chiunlee12: satisfied, or still need further help?"