Question

Has anyone ever seen an "of" statement...here is the problem...
|x| = -a + or - A

Answer 1

|x| = -a

How can you modify the value of a so that you would have a solution to |x| = -a of +a

Answer 2

if x<0, then |x|=-x
if x>0, then |x|=x
if x=0, then |x|=0

so for example -3<0, then |-3|=-(-3)=3

for example 3>0, then |3|=3

Answer 3

|3| =3 whereas |-3| =-(-3) =3 , consider the absolute value notation like a device that gives a positive value all the time

Answer 4

lol you used 3 too

Answer 5

wooow , good chance

Answer 6

I understand the absolute value part but I dont get the of (plus or minus) the a

Answer 7

\[|x|=\pm x\]
since we don't know if x>0 or if x<0

Answer 8

If |x| = a, then x = a or x = -a where 'a' is a nonnegative number

Answer 9

Ex: |x| = 6, so x = 6 or x = -6

Answer 10

you are convinced that the absolute value output would be a positive or zero, right?

Answer 11

absolute value is just like a distance from 0 got that part

Answer 12

the input can be any real number (and imaginary but lets not go there)

Answer 13

exactly a distance is a scalar quanitity in , phyiscally

Answer 14

|x| = -a of (+ or -) a...What is "OF"

Answer 15

might this way of writing the definition of the absolute value confused you, let it me write in another way. using a draw.

Answer 16

look at the darwing now and tray any number as an example

Answer 17

what's ur feedback?

Answer 18

Or put another way, \[\Large |x|=
\begin{cases} x & \text{if } x\ge 0,
\\
-x &\text{if x < 0.}
\end{cases}\]

Answer 19

exactly

Answer 20

but he might see it not clear, so may talk to him about after removing the

Answer 21

unclearity

Answer 22

of the way he found the definition .

Answer 23

I dont think you guys are hearing me...I dont know what the "OF" in that statment means, I am now thinking its a teacher typo

Answer 24

yeah sounds like it should be "or"

Answer 25

oh, man yopu are taking about some kinda mistyping

Answer 26

forget about that

Answer 27

I am not sure lol

Answer 28

it doesn't matter here