IB DP Maths: AA SL復習筆記5.2.6 Derivatives & Graphs
Derivatives & Graphs How are derivatives and graphs connected? asymptotes?–?vertical?and?horizontal intervals where the graph is?increasing?and?decreasing intervals where the graph is?concave d...
AQA A Level Maths: Pure復習筆記2.1.3 Surds - Rationalising the Denominator
Surds - Rationalising the Denominator What does it mean to rationalise a denominator? Rationalising a denominator changes a fraction with surds in its denominator, into an equivalent fractio...
Edexcel IGCSE Physics 復習筆記 2.2.1 Current in Series & Parallel
Edexcel IGCSE Physics 復習筆記 2.2.1 Current in Series & Parallel Current in Series Circuits In a circuit that is a closed-loop, such as a series circuit, the current is the?same value a...
IB DP Maths: AA SL復習筆記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復習筆記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英語語言與寫作和AP英語文學與寫作怎么選？
如果你也有這樣的感想： “SAT要考到1500才能學這門科目嗎？” “5分率這么低真的能學明白嗎？” “這essay到底怎么寫啊？” 那么這篇文章你絕對不得不看！AP英語語言與寫作vs英語文學與寫作，讓不少APer頭痛又糾結的科...
AQA A Level Maths: Pure復習筆記2.1.1 Laws of Indices
Laws of Indices What do I need to know about laws of indices? Laws of indices (or index laws – 'index' is the singular, 'indices' is the plural) allow you to simplify and manipulate expressi...
AQA A Level Maths: Pure復習筆記1.2.1 Proof by Contradiction
Proof by Contradiction What is proof by contradiction? A proof by contradiction assumes the?opposite?result is true Then, through a series of logical steps, shows that this cannot be so How ...
IB DP Maths: AA SL復習筆記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復習筆記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復習筆記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 ...
Edexcel IGCSE Physics 復習筆記 2.1.3 Resistance
Edexcel IGCSE Physics 復習筆記 2.1.3 Resistance Calculating Current, Resistance & Potential Difference Resistance is defined as the?opposition?to current: The higher the resistance of a ...
