It was my understanding that it's like velocity vs speed. Positive/Negative numbers have a directional component, that is that they are above or below zero. Absolute values, however, lack a direction. They're a value, but they don't tell you if the value is positive or negative.
Absolute value shows only distance from the 0 value on the number line without the direction. All distances are positive when viewed without direction.
I don't understand this argument. I've heard high school teachers decree it as a mathematical truth before.
Do we all agree absolute value is a function from reals to reals? If so, the absolute value of any real number is nonnegative. It can be zero or any positive numbers.
22 Comments
Kidplayer_666@lemm.ee · 61 pts · 2y
“Im absolutely sad”
gareppa@programming.dev · 1 pts · 2y
ech@lemm.ee · 19 pts · 2y
What a bizarre choice for the template XD I dig it, though.
S3verin@slrpnk.net · 15 pts · 2y
Before this meme I was sad. Now I am sad and in pain.
MossyFeathers@pawb.social · 6 pts · 2y
I might be wrong, but I thought absolute values weren't positive or negative?
smuuthbrane@sh.itjust.works · 7 pts · 2y
They're not negative, thus they're positive.
MossyFeathers@pawb.social · 2 pts · 2y
It was my understanding that it's like velocity vs speed. Positive/Negative numbers have a directional component, that is that they are above or below zero. Absolute values, however, lack a direction. They're a value, but they don't tell you if the value is positive or negative.
NegativeInf@lemmy.world · 11 pts · 2y
Absolute value shows only distance from the 0 value on the number line without the direction. All distances are positive when viewed without direction.
Noodle07@lemmy.world · 0 pts · 2y
What about non binary numbers?
smuuthbrane@sh.itjust.works · 1 pts · 2y
Those are just complex.
0x0@lemmy.dbzer0.com · 7 pts · 2y
I don't understand this argument. I've heard high school teachers decree it as a mathematical truth before.
Do we all agree absolute value is a function from reals to reals? If so, the absolute value of any real number is nonnegative. It can be zero or any positive numbers.
Case closed, right?
RagingRobot@lemmy.world · 1 pts · 2y
It's like taking a signed int and turning it into an unsigned int though. It doesn't become positive it just loses its sign.
RogueBanana@lemmy.zip · 5 pts · 2y
If your task is to turn any number that could be negative into positive then you would use abs right?
WhiskyTangoFoxtrot@lemmy.world · 3 pts · 2y
I'd use a pencil. I'm too out-of-shape to have abs, particularly ones I could do math with.
Natanael@slrpnk.net · 1 pts · 2y
If you're out of shape then you can use your abs for non-Euclidean geometries
Cosmonaut_Collin@lemmy.world · 2 pts · 2y
Technically true, but they are always graphed in positive quadrants.
Dasnap@lemmy.world · 6 pts · 2y
-(SAD)
Mechaguana@programming.dev · 5 pts · 2y
HA
JimmyBigSausage@lemm.ee · 2 pts · 2y
Hupf@feddit.de · 2 pts · 2y
HA²
Mechaguana@programming.dev · 1 pts · 2y
ha
MonkderZweite@feddit.ch · 1 pts · 2y
Step between: Relativize. "It could be worse."
RogueBanana@lemmy.zip · 1 pts · 2y
voidskull@lemmy.ml · 1 pts · 2y
Think math. It is a modulus function. It spits out 'magnitude' of its input, i.e, whatever is inside it always result positive.
RogueBanana@lemmy.zip · 1 pts · 2y
Realised that immediately after posting and deleted it. Ig the federation didn't work and it want deleted Ig.