SOLUTION: solve : (ln(1+4/x)) ^2 +(ln(1-4/(x+4)))^2 =2(ln((3-x)/(x-1)))^2

Algebra.Com
Question 1109882: solve : (ln(1+4/x)) ^2 +(ln(1-4/(x+4)))^2 =2(ln((3-x)/(x-1)))^2
Answer by KMST(5328)   (Show Source): You can put this solution on YOUR website!
The equation has a few restrictions, but we can worry about it later,
as we may have to get rid of some extraneous solutions, anyway.
For now, we will assume , , etc.












If both logarithms have the same sign (both positive or both negative,
<--> .
Otherwise,
<--> <--> .

And we trudge on.








For ,
, , , , , and are all positive,
so it looks like a valid solution, and it verifies.
For , ,
so does not exist/is undefined,
so we know is not a solution.
I do not have to try to verify that.








For ,
, , , , , and are all positive,
so it looks like a valid solution, and it verifies.
For , ,
so does not exist/is undefined,
so we know is not a solution.
I do not have to try to verify that.

HOW WE VERIFY:
For



RELATED QUESTIONS

Solve... (answered by stanbon)
Solve: log base 4 (X) + Log base 8 (x) = 1 ln X/ln 4 + ln X/ln 8=1 2 ln X/2 ln 4 + ln... (answered by Fombitz)
Solve, ln x^1/4 = (ln... (answered by venugopalramana)
Solve, ln x^1/4 = (ln... (answered by venugopalramana)
x= ln 3 + ln 4 - ln... (answered by jim_thompson5910)
1 - 2 ln... (answered by jim_thompson5910)
ln x+ 2 ln 4 = ln 7- ln... (answered by scott8148)
Let ln (a)=2, ln (b)=3, ln (c)=5. Solve: f (x)=(ln (c^2))(ln... (answered by MathLover1,MathTherapy)
2ln(x+1/2)=ln(1/4) (answered by lwsshak3)