what does this cirlced thing mean

[spiral sierra]

Plus or minus

[prisma coral]

But what does it tryna say?

That the x and y values can be both negative and positive?

[spiral sierra]

If we had x=±2, then x would be equal to both 2, and -2

[uneven portal]

well

can i say a thing or am i interrupting?

[spiral sierra]

No, go ahead

[uneven portal]

it means either plus or minus

both are correct

not both at the same time

but for example

if i say

$f(\pm2)=0$

[civic garnet]

yoavmal

[uneven portal]

it actually means

$f(2)=0$ and $f(-2)=0$

[civic garnet]

yoavmal

[uneven portal]

does that make sense? @prisma coral

[spiral sierra]

Thanks for clarifying that Yoavmal

I think one other thing to note in this is that the ± is due to the square root. Because (-2)^2 and 2^2 both equal 4, √4 can be ±2

[prisma coral]

So it’s saying that whether x or y values are positive or negative we would still get the same distance value?

[spiral sierra]

The ± only applies to the part under the square root

[prisma coral]

)-:

I don’t get it..

[spiral sierra]

So d = +√(|x_1-x_2|^2+|y_1-y_2|^2) or d = -√(|x_1-x_2|^2+|y_1-y_2|^2)

[prisma coral]

OH

Thank you both 😊