Question

true or false

Answer 1

.\(\large \color{black}{\begin{align}\text{For } x\in \mathbb{R}\\~\\ \mid x\mid=
\begin{cases}
x, & x\geq 0 \\
-x, & x<0
\end{cases}
\hspace{.33em}\\~\\
\end{align}}\)

Answer 2

It is true. If, for example x is equal to -1:
\[\left| -1 \right| = -1.(-1) = 1\]
and if x is positive, it is already positive.

Answer 3

@peachpi

Answer 4

how can |x|=-x for x<0

Answer 5

If x < 0, then x is negative. -x returns a positive value

Answer 6

-(-1) = 1

Answer 7

how do i read this

\(\large \color{black}{\begin{align}\mid x\mid=
\begin{cases}
x, & x\geq 0 \\
-x, & x<0
\end{cases}
\hspace{.33em}\\~\\
\end{align}}\)

Answer 8

the absolute value of x is equal to x for x greater than or equal to 0 and is equal to negative x for x less than 0.

Answer 9

ok and it is true ?

Answer 10

yes

Answer 11

ok thnk u :)

Answer 12

you're welcome