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Joined: Jan 1970
Posts: 4,027
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Joined: Aug 2005
Hi, Stefan and Bill;
just a small remark over Bill's explanation:
- [f][(i)] allows you to temporarily "see" the imaginary part of the complex number in the X-register; if the HP15C is not in complex mode, [f][(i)] returns an [ Error 3 ] message;
- as Bill mentioned correctly, I consider [g][SF]8 as the most "natural" sequence to activate complex mode in the HP15C, because it does not change existing stack contents; [f][I] (upper case "I", beside (i) function in the keyboard) also activates complex mode, but this sequence alters stack contents; and the third possible sequence to activate complex mode in the HP15C is [f][Re<>Im] (real exchanges imaginary), that changes only X-register contents.
Just my 2¢.
Best regards.
Luiz (Brazil)