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Sign
Reading time: 1minNota
Working with permutations? See Sign (Permutations).
Returns the sign of a number.
Syntax
sign(Real)
sign(Complex)
Description
Given a real number x, returns its sign: sign(x)=0, if x=0, 1, if x>0 , -1, if x<0
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Given a complex number z, returns sign(z)=0, if z=0, z/z, if z≠0
