IB DP Maths: AA SL复习笔记2.2.1 Quadratic Functions
Quadratic Functions & Graphs What are the key features of quadratic graphs? If a is positive then the vertex is the minimum point If a is negative then the vertex is the maximum point Wh...
IB DP Maths: AA SL复习笔记2.1.1 Equations of a Straight Line
How do I find the gradient of a straight line? Find two points that the line passes through with coordinates (x1, y1) and (x2, y2) The gradient between these two points is calculated by This is giv...
法国高商专业众多，选择哪些专业最好呢？
法国高等商学院（Grandes Ecoles）也称"精英大学校"，是由法国教育部文化部及大型企业共同控股的办校模式，是法国教育机制的一大特色。因为其毕业生往往有很好的前途与"钱途"，成为许多法国与海外求学者梦寐以求...
IB DP Maths: AA SL复习笔记1.5.1 Binomial Theorem
Binomial Theorem What is the Binomial Theorem? The binomial theorem (sometimes known as the binomial expansion) gives a method for expanding a two-term expression in a bracket raised to a power A b...
Edexcel IGCSE Chemistry 复习笔记 4.3.2 Halogens & Alkanes
Edexcel IGCSE Chemistry 复习笔记 4.3.2 Halogens & Alkanes Halogens & Alkanes In a substitution reaction, one atom is swapped with another atom Alkanes undergo a substitution reaction...
IB DP Maths: AA SL复习笔记1.4.1 Proof
Language of Proof What is proof? Proof is a series of logical steps which show a result is true for all specified numbers ‘Seeing’ that a result works for a few numbers is not enough to show that ...
Edexcel IGCSE Chemistry 复习笔记 4.3.1 Alkanes
Edexcel IGCSE Chemistry 复习笔记 4.3.1 Alkanes The Alkanes Alkanes are a group of saturated hydrocarbons The term saturated means that they only have single carbon-carbon bonds, there are no...
Edexcel IGCSE Chemistry 复习笔记 4.2.4 Cracking
Edexcel IGCSE Chemistry 复习笔记 4.2.4 Cracking Cracking Saturated molecules contain single bonds only whereas unsaturated molecules contain double bonds between their carbon atoms Alkanes a...
IB DP Maths: AA SL复习笔记1.3.5 Compound Interest & Depreciation
Compound Interest What is compound interest? Interest is a small percentage paid by a bank or company that is added on to an initial investment Interest can also refer to an amount paid on a loan o...
Edexcel IGCSE Chemistry 复习笔记 4.2.3 Nitrogen Oxides & Sulfur Dioxide
Edexcel IGCSE Chemistry 复习笔记 4.2.3 Nitrogen Oxides & Sulfur Dioxide Formation of Nitrogen Oxides Nitrogen Oxides These compounds (NO and NO2) are formed when nitrogen and oxygen reac...
Edexcel IGCSE Chemistry 复习笔记 4.2.2 Combustion
Edexcel IGCSE Chemistry 复习笔记 4.2.2 Combustion Fuels & Combustion The combustion of fossil fuels is the major source of atmospheric pollution Fossil fuels include: coal, oil, natural ...
Edexcel IGCSE Chemistry 复习笔记 4.2.1 Crude Oil & Fractional Distillation
Edexcel IGCSE Chemistry 复习笔记 4.2.1 Crude Oil & Fractional Distillation Crude Oil & Fractional Distillation Crude oil as a mixture is not a very useful substance but the different...
