Solving Exponential Equations What are exponential equations? An exponential equation is an equation where the unknown is a power In simple cases the solution can be spotted without the use of a ca...
Laws of Logarithms What are the laws of logarithms? Laws of logarithms allow you to simplify and manipulate expressions involving logarithms The laws of logarithms are equivalent to the laws of ind...
Introduction to Logarithms What are logarithms? Why use logarithms? Logarithms allow us to solve equations where the exponent is the unknown value We can solve some of these by inspection For examp...
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...
Standard form (sometimes called scientific notation or standard index form) gives us a way of writing very big and very small numbers using powers of 10. Standard Form Why use standard form? Some n...
l'Hôpital's Rule What is l’Hôpital’s Rule? l’Hôpital’s rule is a method involving calculus that allows us to find the value of certain limits How do I evaluate a limit using l’Hôpital’s Rule? Exam ...
Edexcel IGCSE Chemistry 复习笔记 3.3.3 The Position of Equilibrium Factors that Affect the Position of Equilibrium When a change is made to the conditions of a system at equilibrium, the sy...
Edexcel IGCSE Chemistry 复习笔记 3.3.2 Dynamic Equilibrium Dynamic Equilibrium We have already seen that a reversible reaction is one that occurs in both directions When during the course of...
Edexcel IGCSE Chemistry 复习笔记 3.3.1 Reversible Reactions Reversible Reactions Some reactions go to completion, where the reactants are used up to form the product molecules and the reacti...
