Question

What is an inverse of – i in the multiplicative group if {1, – 1, i , – i} is?
-1
1
i
None of these​

Answer 1

Answer:

(3) i

hope it's helpful for you

Answer 2

$✭Answer ✭$

In mathematics, a multiplicative inverse or reciprocal for a number x, denoted by 1/x or x−1, is a number which when multiplied by x yields the multiplicative identity, 1. The multiplicative inverse of a fraction a/b is b/a. For the multiplicative inverse of a real number, divide 1 by the number.