Unary minus precedence preference

[Johnh]

(06-04-2024 07:23 PM)dm319 Wrote:  I guess negative numbers and imaginary numbers aren't really 'real'. They are useful concepts to help our calculations. But we don't have negative mass, negative temperature, negative distances, negative apples in 'reality'.

In conclusion, unless you are a natural number, you can't expect to be a first class citizen in algebra!

It's getting cold down here in Australia, the temperature outside is about -2 degrees C this morning. And our dollar is down too, about -1% against the USD. But I'll be working today, my leave balance at work is -6 days, since I took a vacation a couple of months ago. I'll be working on some LRC circuits, for which the impedance of my 220uF capacitors at 110hZ is -6.6i.

So there's lots of unary negatives in my real world today. Except for the capacitive reactance, which is an imaginary number.