IB DP Maths: AA HL复习笔记2.3.3 Symmetry of Functions
What are odd functions? What are even functions? What are the symmetries of graphs of odd & even functions? The graph of an odd function has rotational symmetry The graph is unchanged by a 180°...
IB DP Maths: AA HL复习笔记2.3.2 Composite & Inverse Functions
What is a composite function? How do I find the domain and range of a composite function? Exam Tip Worked Example Inverse Functions What is an inverse function? What are the connections between a f...
IB DP Maths: AA HL复习笔记2.3.1 Language of Functions
What is a mapping? A mapping transforms one set of values (inputs) into another set of values (outputs) Mappings can be: One-to-one Each input gets mapped to exactly one unique output No two inputs...
IB DP Maths: AA HL复习笔记2.2.5 Discriminants
What is the discriminant of a quadratic function? The discriminant of a quadratic is denoted by the Greek letter Δ (upper case delta) For the quadratic function the discriminant is given by This is...
Edexcel IGCSE Biology 复习笔记 3.2.7 Mutation
Edexcel IGCSE Biology 复习笔记 3.2.7 Mutation Mutations Mutations are rare, random changes that occur in the sequence of DNA bases in a gene or a chromosome Mutations occur continuously As t...
IB DP Maths: AA HL复习笔记2.2.4 Quadratic Inequalities
What affects the inequality sign when rearranging a quadratic inequality? The inequality sign is unchanged by... Adding/subtracting a term to both sides Multiplying/dividing both sides by a positiv...
Edexcel IGCSE Biology 复习笔记 3.2.6 Variation
Edexcel IGCSE Biology 复习笔记 3.2.6 Variation Types of Variation Variation is defined as differences between individuals of the same species Variation can be divided into two types dependin...
Edexcel IGCSE Biology 复习笔记 3.2.5 Cell Division
Edexcel IGCSE Biology 复习笔记 3.2.5 Cell Division Mitosis Mitosis is defined as nuclear division giving rise to genetically identical cells This type of cell division is used for growth, re...
IB DP Maths: AA HL复习笔记2.2.3 Solving Quadratics
Solving Quadratics Equations How do I decide the best method to solve a quadratic equation? If it is a calculator paper then use your GDC to solve the quadratic If it is a non-calculator paper then...
