Plus42 Equations, Preview Release

[Thomas Okken]

New update:

1. On second thought, why get rid of repeated squaring for Y^X with complex Y and integer X completely? Following the same principle as the case for real Y and integer X, now using repeated squaring as long as it is exact. So this now applies to all complex numbers, not just pure-real or pure-integer, so you can get exact results for things like (3+4i)^48.