write a root power of roots in the field
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Answers
Explanation:
Answered August 28, 2019 · Author has 389 answers and 53.8K answer views. The square root of a sum is not equal the sum of the square roots. Therefore: sqrt(A + B) says add (A + B) and only then take the square root. For example: sqrt (9 + 16) = sqrt(25) = 5.
Explanation:
In mathematics, a root of unity, occasionally called a de Moivre number, is any complex number that yields 1 when raised to some positive integer power n. Roots of unity are used in many branches of mathematics, and are especially important in number theory, the theory of group characters, and the discrete Fourier transform.
Roots of unity can be defined in any field. If the characteristic of the field is zero, they are complex numbers that are also algebraic integers. In positive characteristic, they belong to a finite field, and, conversely, every nonzero element of a finite field is a root of unity. Any algebraically closed field contains exactly n nth roots of unity, except if n is a multiple of the (positive) characteristic of the field.