Equations of a Straight Line How do I find the gradient of a straight line? Find two points that the line passes through with coordinates (x1, y1) and?(x2, y2) The gradient between these two points...
How can I write a system of linear equations? To save space we can just write the?coefficients?without the variables What?is a row reduced system of linear equations? A system of linear equations i...
What are systems of linear equations? A linear equation is an equation of the first order (degree 1) This means that the?maximum degree?of each term is 1 These are examples of linear equations: 2x?...
How do I find the square root of a complex number? The square roots of a complex number will themselves be complex: How do I use de Moivre’s Theorem to find roots of a complex number? De Moivre’s T...
What is De Moivre’s Theorem? De Moivre’s theorem can be used to find powers of complex numbers How do I use de Moivre’s Theorem to raise a complex number to a power? If a complex number is in Carte...
What are complex roots? A quadratic equation can either have two real roots (zeros), a repeated real root or no real roots This depends on the location of the graph of the quadratic with respect to...
How do I write a complex number in modulus-argument (polar) form? How do I multiply complex numbers in modulus-argument (polar) form? The main benefit of writing complex numbers in modulus-argument...
What does addition look like on an Argand diagram? In Cartesian form two complex numbers are added by adding the real and imaginary parts When plotted on an Argand diagram the complex number?z1??+?...
What is the complex plane? The complex plane, sometimes also known as the Argand plane, is a two-dimensional plane on which complex numbers can be represented geometrically It is similar to a two-d...
