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I want to rewrite the following equation in terms of t:

[tex]X=\exp(-At)-\exp(-Bt)[/tex]

Where X,A and B are positive numbers.

The problem is, I have a -exp() term... so I can't take the natural log of this... ie. as far as I am aware the following is not allowed:

[tex]\ln(-\exp(-Bt))[/tex]

So is there any trick I can use in order to rewrite this equation in terms of t?

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# Homework Help: Dealing with natural logs

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