A complex number is any number which can be written as a+ib where a and b are real numbers and i=√−1 is an imaginary number.
a is the real part of the complex number and b is the imaginary part of the complex number.
Example for a complex number: 9 + i2
POINTS TO KNOW
- If the complex number a+ib=x+iy, then a=xand b=
- Fourth Roots of Unity, (1)1/4 are +1, -1, +i, -i
This may help you to identify real and imaginary numbers