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Stuck Trying to Re-arrange Variables

  • Thread starter cgw_niu
  • Start date
Problem Statement
I need to re-arrange the below statement in terms of "t"
Relevant Equations
Original Equation:

k = 1/[e^(-A*t) - e^(-B*t)]

Where k is a real number and A and B are real numbers > 1
this is as far as I get:
246511
 
Here is the original form of the equation

246512
 

HallsofIvy

Science Advisor
Homework Helper
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I doubt you will find any algebraic solution to that equation.
 
I doubt you will find any algebraic solution to that equation.

bummer, I am often given the value of "k" but do not know at what time it happens. The only was so far is to plug and play or plot it and get a close estimate for "t". I am by far means no mathematician, but I would think there has to be a way to solve for "t" for a known value of "k". Maybe not though.
 

phyzguy

Science Advisor
4,156
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It's easy to solve for t numerically given the other values. A method like Newton's method should converge to a solution rapidly. That's probably what you really want.
 

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