- #1

Khan

- Thread starter Khan
- Start date

- #1

Khan

- #2

Njorl

Science Advisor

- 258

- 10

a^x=SUM[((alnx)^n)/(n!)]

Just replace a and x with i.

At first glance, it doesn't look real to me, but maybe the sum telescopes.

Njorl

- #3

Soroban

I'm not sure what you mean by

since it is already a constant.

Using DeMoivre's Theorem (Euler's?): e

when x = pi/2, we have: e

Raise both sides to the power

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