IB DP Maths: AA HL复习笔记2.3.4 Graphing Functions
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...
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...
A-level出分，分数不理想的三种解决方式
一个多月后，同学们将收到自己夏季大考的成绩，掌握应对A-Level出分后的不同情况是目前同学们的关键预备点 情况A. 成绩达到预期 如果成绩放榜后达到你的心里预期，也达到了firm choice的要求，感觉开心终于松了一...
A-Level如何选课？6种堪称完美的A-Level选课组合！
A-Level ( Advanced Level)，英国高中课程，超过70多门学科供学生选择，一般学生选择3-4门课程进行学习，热门课程包括数学、物理、生物、化学、心理学、经济学等学科。A-Level课程的最大的优点是打破了文理科限制...
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...
