Quote:
Originally Posted by Strants
we can just use the limit definition of the exponential function.
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Most sources call that a property rather than a definition.
See for example
http://mathworld.wolfram.com/ExponentialFunction.html
But let's call it a definition. Then since it's a definition you can use it even though it's not in the
list of allowable list of test/rules/theorems specified in the original problem statement
I like your answer, nice work.