Assertion: complex's root | /r/Synonym | principal square root
Facets:
Source sentences:
text: \sqrt {a^{2}+b^{2}}}} is called the modulus of a + bi, and the square root sign indicates the square root with non-negative real part, called the principal square root; also a 2 + b 2 = z z ¯ , {\displaystyle {