Edexcel IGCSE Physics 复习笔记 2.2.1 Current in Series & Parallel
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IB DP Maths: AA SL复习笔记5.2.5 Concavity & Points of Inflection
Concavity of a Function What is concavity? Concavity is the way in which a curve (or surface) bends Mathematically,CONCAVE DOWN is often called concave CONCAVE UP is often called convex Exam...
AQA A Level Maths: Pure复习笔记2.1.2 Manipulating Surds
Manipulating Surds What are surds? If n is a positive integer and is not a square number, then √n (or any multiple of √n ) is a surd Surds are examples of irrational numbers What do I need t...
AP英语语言与写作和AP英语文学与写作怎么选？
如果你也有这样的感想： “SAT要考到1500才能学这门科目吗？” “5分率这么低真的能学明白吗？” “这essay到底怎么写啊？” 那么这篇文章你绝对不得不看！AP英语语言与写作vs英语文学与写作，让不少APer头痛又纠结的科...
AQA A Level Maths: Pure复习笔记2.1.1 Laws of Indices
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AQA A Level Maths: Pure复习笔记1.2.1 Proof by Contradiction
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IB DP Maths: AA SL复习笔记5.2.4 Further Applications of Differentiation
Stationary Points & Turning Points What is the difference between a stationary point and a turning point? A stationary point is a point at which the gradient function is equal to zero The tange...
IB DP Maths: AA SL复习笔记5.2.3 Second Order Derivatives
Second Order Derivatives What is the second order derivative of a function? If you differentiate the derivative of a function (i.e. differentiate the function a second time) you get the second orde...
IB DP Maths: AA SL复习笔记5.2.2 Techniques of Differentiation
Chain Rule What is the chain rule? How do I know when to use the chain rule? How do I use the chain rule? Are there any standard results for using chain rule? Exam Tip You should aim to be able to ...
