2022-23NEC全美经济学挑战新赛季开启！上海平和、广东碧桂园学霸邀你组队！
历史悠久的中学生经济学术盛会 超高影响力的未来财商精英的摇篮 60%的全球站学生被藤校与G5录取 通往全球经济圈的活动飞船即将起航 NEC全美经济挑战赛 新赛季开启组队招募令不少翰林学员都通过NEC的优异成绩 斩...
IB DP Maths: AA SL复习笔记1.1.2 Laws of Indices
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...
IB DP Maths: AA SL复习笔记1.1.1 Standard Form
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...
IB DP Maths: AA HL复习笔记5.12.1 Further Limits
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
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
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
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...
Edexcel IGCSE Chemistry 复习笔记 3.2.6 Practical: Effect of Catalysts on Rate of Reaction
Edexcel IGCSE Chemistry 复习笔记 3.2.6 Practical: Effect of Catalysts on Rate of Reaction Practical: Effect of Catalysts on Rate of Reaction Aim: To investigate the effect of different solids on th...
IB DP Maths: AA HL复习笔记5.11.2 Maclaurin Series from Differential Equations
Maclaurin Series for Differential Equations Can I apply Maclaurin Series to solving differential equations? How can I find the Maclaurin Series for the solution to a differential equation? Worked E...
Edexcel IGCSE Chemistry 复习笔记 3.2.5 Practical: Effect of Surface Area on Rate of Reaction
Edexcel IGCSE Chemistry 复习笔记 3.2.5 Practical: Effect of Surface Area on Rate of Reaction 3.2.5 Practical: Effect of Surface Area on Rate of Reaction Practical: Effect of Surface Area on Rate of...
Edexcel IGCSE Chemistry 复习笔记 3.2.4 Activation Energy
Edexcel IGCSE Chemistry 复习笔记 3.2.4 Activation Energy Reaction Profiles Reaction Profiles Showing ∆H and EA Diagram shows that a catalyst increases the rate of a reaction by...
Edexcel IGCSE Chemistry 复习笔记 3.2.3 Catalysts
Edexcel IGCSE Chemistry 复习笔记 3.2.3 Catalysts Catalysts & Rates Catalysts are substances which speed up the rate of a reaction without themselves being altered or consumed in the reac...
