Fix the zeta function.
Correct indentation
Fix mainline WP 34S complex gamma reflection formula.
Fix complex gamma reflection formula for 31S (for what it's worth).
Fix reflection formula for complex 34C firmware.
Fix V2.2 complex gamma function reflection formula.
Change Zeta reflection point. The series converges for x>0 so we don't reflect
Provide better seven segment graphics for 'K'