Welcome to Westonci.ca, the Q&A platform where your questions are met with detailed answers from experienced experts. Join our platform to connect with experts ready to provide detailed answers to your questions in various areas. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

What is the square root of -1?

A. -i
B. i
C. -1
D. 1


Sagot :

To solve for the square root of -1, let's analyze the problem in the context of complex numbers.

In the realm of real numbers, taking the square root of a negative number is not possible. However, in the field of complex numbers, we introduce the concept of an imaginary unit, denoted by [tex]\( i \)[/tex], which is defined as the square root of -1.

By definition:

[tex]\[ i^2 = -1 \][/tex]

Hence,

[tex]\[ i = \sqrt{-1} \][/tex]

Therefore, the square root of -1 is [tex]\( i \)[/tex].

Among the given choices:
1. [tex]\(-i\)[/tex]
2. [tex]\(i\)[/tex]
3. [tex]\(-1\)[/tex]
4. 1

The correct answer is:

[tex]\[ i \][/tex]