For example,
I have two eqn. a+b = ±9
and a-b = ±7
If we divide this equations.
Then ±9/±7 results in 9/7?
#Is ± divide by ± results in +?
covert patrol
slow pilotBOT
warm leaf
I think the final result should still have a +/- because it could be that the 9 and the 7 have different signs.
tepid ivy
unless the signs of ±9 and ±7 strictly stem from the same source
but that also means wasting effort on maintaining the ± and ∓ and switching between the two as necessary when multiplying by negative numbers
warm leaf
that is fair enough. I have not thought of that, I apologize.
winter willow
could also be the case that when a+b=9, a-b=-7 (and when a+b=-9, a-b=7)
trail lion
a+b=+-9 is not a single equation. It is infact two equations
Similarly +-9 is two values. So when you divide +-9/+-7. You need to take all possible cases. Which will give you 4 numbers out of which two pairs are identical
So it gives you +-9/7
sage smelt
well there is one reasonable answer, out of 4 cases, 2 give +, 2 give -, so there is equal chance of getting +-
trail lion
Yeah, but it is not about chance. Even if we get 1+ and 3- we still give it +-9/7
sage smelt
i was using chance as a word to represent ideas
tepid ivy
if you didnt go through all the trouble of reservimg brain power for ± and ∓
then another intepretation is that the sign of the fraction depends on whether the signs of numerator and denominator are same (+) or not same (-)
tepid ivy
sometimes you just have to state the obvious 🤷♂️
sage smelt
makes point
but representing something in good way, means better understanding
but i think we should not do this debate in public
.solved
/solved
btw accept my friend req
covert patrol
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