Edexcel IGCSE Chemistry 复习笔记 4.5.1 Alcohols
Edexcel IGCSE Chemistry 复习笔记 4.5.1 Alcohols The Alcohols Alcohols are colourless liquids that dissolve in water to form neutral solutions The first four alcohols are commonly used as fue...
Edexcel IGCSE Chemistry 复习笔记 4.4.2 Bromine & Alkenes
Edexcel IGCSE Chemistry 复习笔记 4.4.2 Bromine & Alkenes Bromine & Alkenes Alkenes are a homologous series of hydrocarbon compounds with at least one double bond between two of the c...
Edexcel IGCSE Chemistry 复习笔记 4.4.1 Alkenes
Edexcel IGCSE Chemistry 复习笔记 4.4.1 Alkenes The Alkenes All alkenes contain a double carbon bond, which is shown as two lines between two of the carbon atoms i.e. C=C All alkenes contain ...
IB DP Maths: AA SL复习笔记2.3.1 Language of Functions
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 uniqu...
IB DP Maths: AA SL复习笔记2.2.5 Discriminants
Discriminants What is the discriminant of a quadratic function? How does the discriminant of a quadratic function affect its graph and roots? Forming equations and inequalities using the discrimina...
IB DP Maths: AA SL复习笔记2.2.4 Quadratic Inequalities
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 ...
AP微积分考试备考重点！
AP微积分，是一门美国大学预修课程，其考试成绩不仅可以抵扣成功申请美国大学的同学们入学后相应课程的学分，还被作为美国各大学录取学生的重要依据，所以考到一个好的分数，成为了很多同学的愿景。好消息是AP微...
IB DP Maths: AA SL复习笔记2.2.3 Solving Quadratics
Solving Quadratics Equations How do I decide the best method to solve a quadratic equation? How do I solve a quadratic equation by the quadratic formula? How do I solve a quadratic equation by fact...
IB DP Maths: AA SL复习笔记2.2.2 Factorising & Completing the Square
Factorising Quadratics Why is factorising quadratics useful? Factorising gives roots (zeroes or solutions) of a quadratic It gives the x-intercepts when drawing the graph How do I factorise a monic...
