Complex numbers

[RobertDyd]

Hello,

This might sound like a dumb question, but can I use my calculator to input a mod-arg and get an answer in x+iy form without getting marked down in a test? I guess this relates to what situation I'm in with the question but I'm not sure when this method is reasonable.

Thanks,
Robbo

[RuiAce]

Sure. Why not? If you have one of those calculators it guarantees you like 2-5 free marks every exam.

Although, you shouldn't abuse the calculator. Keep these strategies to within boundaries - if the conversion is really easy, then a calculator would be fine. But if you had to handle something like \( \frac{1-\sqrt3i}{\sqrt3+i}\) then I'd probably show a bit of working out.

[RobertDyd]

Sure. Why not? If you have one of those calculators it guarantees you like 2-5 free marks every exam.

Although, you shouldn't abuse the calculator. Keep these strategies to within boundaries - if the conversion is really easy, then a calculator would be fine. But if you had to handle something like \( \frac{1-\sqrt3i}{\sqrt3+i}\) then I'd probably show a bit of working out.

Thanks boss