Simultaneous Eqns with exponents

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Homework Help Overview

The discussion revolves around solving a system of equations involving natural logarithms and exponents, specifically ln(1-x) = a(b-1/T) and ln(x) = c(d-1/T). The original poster seeks to find the variables x and T.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • The original poster attempts to express x in terms of other variables and questions what substitution might be effective next. Another participant suggests that the parameters a and c complicate the ability to solve the equations directly and proposes a method of substitution that leads to a new equation.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the problem and the implications of the parameters involved. Some guidance has been offered regarding substitution methods, but no consensus has been reached on a definitive approach.

Contextual Notes

There is a note regarding the need for participants to show their attempts at the problem to receive help, indicating a potential constraint on the discussion's progress.

cvr
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How do you solve:

ln(1-x) = a(b-1/T)
ln(x) = c(d-1/T)

for x and T ?

I see that x = e^c(d-1/T) and 1 = e^a(b-1/T) + e^c(d -1)/T but it is unclear to me what substitution to try next.

Thanks

cvr
 
Last edited:
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cvr,

1.) Homework goes in the Science Education Zone, not the Math section. I'm moving this thread to the right place.

2.) You must show an attempt at the problem in order to receive help.

I've soft deleted mathman's post, and will restore it once you have shown a reasonable attempt.
 
I've update the post to include what I've tried so far

Thanks,

cvr
 
Well I'm not sure if you can solve this particular set for any a,c. I say a,c, because when I play with them, its the letters a & c that get in the way.

If you solve the first equation for x and the second equation for T, you can then put this equation for T into your equation for x and you'll get something like:

x+wx^(a/c)-1=0

where w is just a number
 

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