This lesson we talk about how the argument has to be between -180 to 180 degrees, so if the complex number has a negative imaginary part then it will have a negative argument.
In this lesson we talk about how to find the argument of z – the angle between the line segment joining the origin to z and the positive x axis.
In this lesson we talk about how to find the modulus of a complex number.
In this lesson you will do a quiz that requires you to find the value of unknown variables using the concept that the real part of the left hand side equals the real part of the right hand side, and that the imaginary part of the left hand side equals the imaginary part of the …
In this first complex numbers quiz we do a question on using the Re() and Im() functions.
In this lesson we learn how to multiply two complex numbers together by doing binomial expansion, and we also look at the effect of doing this geometrically.
In this lesson we talk about how to multiply a complex number by a scalar quantity and how to represent this on an Argand diagram.
In this lesson we teach you how to add and subtract complex numbers, and what this means geometrically (shown on graphs drawn in Geogebra).
In this lesson we define the set of complex numbers and we also show you how to plot complex numbers onto a graph.
In this lesson we learn how to simplify powers of imaginary numbers e.g. simplify i^33+i^40 Interesting stuff! Requires knowledge of index laws.