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Real numbers/Convergent sequence/Modulus/Exercise
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Real numbers
Let
(
x
n
)
n
∈
N
{\displaystyle {}{\left(x_{n}\right)}_{n\in \mathbb {N} }}
be a convergent sequence of real numbers with limit equal to
x
{\displaystyle {}x}
. Prove that also the sequence
(
|
x
n
|
)
n
∈
N
{\displaystyle {\left(\vert {x_{n}}\vert \right)}_{n\in \mathbb {N} }}
converges, and specifically to
|
x
|
{\displaystyle {}\vert {x}\vert }
.
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