SOLUTION: How to solve for x: (exp x) - x = a

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Question 386461: How to solve for x: (exp x) - x = a
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
There's not a closed form solution.
You need to use Newton's method.
You're solving for the intersection of a line with the exponential curve.
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As you see, you can have 0, 1, or 2 solutions depending on a.