a+ib it is a complex nomber what is the mean of '+' sign?

Question

i m a college student please solve my quairy

Answer 1

Consider z = x + yi

z = x + yi is to be understood as saying that the complex number z is the sum of the real number x and the real number y times i. In general, the x part of a complex number z is called the real part of z, while y is called the imaginary part of z. (Sometimes yi is called the imaginary part.)

Complex Plane:
When we use the xy-plane for the complex plane C, we'll call the x-axis by the name real axis, and the y-axis we'll call the imaginary axis.

Real numbers are to be considered as special cases of complex numbers

For more info on complex numbers read from the following site:
http://www.clarku.edu/~djoyce/complex/

Have a nice day.

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