Formula:1577

Digital Library of Mathematical Functions ID 4.2.E37

${\displaystyle{\displaystyle\sqrt{z^{2}}=\begin{cases}z,&\Re z\geq 0,\\ -z,&\Re z\leq 0.\end{cases}}}$

Symbols List

• ${\displaystyle{\displaystyle\Re}}$: real part
• ${\displaystyle{\displaystyle z}}$: complex variable
 

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