What is an exponential function? What are the key features of exponential graphs? The graphs have a?y-intercept?at (0, 1) The graphs?do not have any roots For?a?> 1?this is the?limiting value?wh...
How do I graph the function?y?=?f(x)? The?horizontal axis?is used for the?domain The?vertical axis?is used for the?range You will be able to graph some functions by hand For some functions you will...
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°...
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...
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...
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 復習筆記 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...
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 復習筆記 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...
