Amortisation What is amortisation? Amortisation is the process of repaying a loan over a fixed period of time Most commonly questions will be about mortgages (loans taken out to buy a home) or loan...
Compound Interest What is compound interest? Interest is a small percentage paid by a bank or company that is added on to an initial investment Interest can also refer to an amount paid on a loan o...
Many real-life situations can be modelled using sequences and series, including but not limited to: patterns made when tiling floors; seating people around a table; the rate of change of a populati...
Geometric Sequences What is a geometric sequence? In a geometric sequence, there is a common ratio, r, between consecutive terms in the sequence For example, 2, 6, 18, 54, 162, … is a sequence with...
Arithmetic Sequences What is an arithmetic sequence? In an arithmetic sequence, the difference between consecutive terms in the sequence is constant This constant difference is known as the common ...
Language of Sequences & Series What is a sequence? A sequence is an ordered set of numbers with a rule for finding all of the numbers in the sequence For example 1, 3, 5, 7, 9, … is a sequence ...
Systems of Linear Equations What are systems of linear equations? A linear equation is an equation of the first order (degree 1) It is usually written in the form ax + by + c = 0 where a, b, and c ...
Approximating Values How do I know what to round my answer to? Unless otherwise told, always round your answers to 3 significant figures (3 s.f.) The first non-zero digit is the first significant d...
Laws of Indices What are the laws of indices? Laws of indices (or index laws) allow you to simplify and manipulate expressions involving exponents An exponent is a power that a number (called the b...
