Calculator test

[naddy]

(12-08-2024 07:36 AM)C.Ret Wrote:  Note, that trying the equation \(e^{\pi\cdot i}=^-1\) the opposite direction, show an interesting fact (or flow) about HP-15C precision in complex computations:
[g][ ∏ ][f][Re⇋Im][ ◀- ][ e^x ] exactly display real part -1.0000 but the imaginary part is not exactly what we expect; [f][(i)] or [f][Re⇋Im] display 4.1000  -10.

The fault lies with your expectation. The [π] key gives you 3.141592654. This is not π. You get the result for a calculation with 3.141592654, not the one you would get for π. This is in fact covered in the appendix of the Advanced Functions Handbook.