Complex Numbers and Roots Flashcards
1
Q
What is an Imaginary Unit?
A
A unit in the imaginary number system sqrt-1.
2
Q
What is an Imaginary Number?
A
An imaginary number is the square root of a negative number, written in the form bi, where b is a real number and i is an imaginary unit.
3
Q
What is a Complex Number?
A
Any number that can be written as a+bi, where a and b are real numbers and i=sqrt-1.
4
Q
What is a Real Part?
A
In a complex number, a is the real part.
5
Q
What is an Imaginary Part?
A
In a complex number, the real number b is called the imaginary part.
6
Q
When are two Complex Numbers equal?
A
They are equal if their real parts and their imaginary parts are equal.
7
Q
What is a Complex Conjugate?
A
The complex conjugate of any complex number a+bi is a=bi.
