A-level大考出分，名校还有补录名额吗？
8月18日，A-level大考全面出分！CIE考试局IGCSE出分！STEP出分！EPQ出分！许多英国大学警告称，竞争将非常激烈，最受欢迎的课程很难找到名额。名校还有补录名额吗？ 成绩查询方式 CIE：https://myresults.cie.org...
CIE A Level Maths: Pure 1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 (ie differentiate the function a second time) you get the second order ...
CIE A Level Maths: Pure 1复习笔记5.2.2 Increasing & Decreasing Functions
Increasing & Decreasing Functions What are increasing and decreasing functions? A function f(x) is increasing on an interval [a, b] if f'(x) ≥ 0 for all values of x such that a< x < b. If...
CIE A Level Maths: Pure 1复习笔记5.2.1 Gradients, Tangents & Normals
Gradients, Tangents & Normals Using the derivative to find the gradient of a curve To find the gradient of a curve y= f(x) at any point on the curve, substitute the x‑coordinate of the point in...
CIE A Level Maths: Pure 1复习笔记5.1.4 Chain Rule
Chain Rule What is the chain rule? If y is a function of u, and u is a function of x, then the chain rule tells us that The chain rule allows us to differentiate more complicated expressions and c...
CIE A Level Maths: Pure 1复习笔记5.1.3 Differentiating Powers of x
Differentiating Powers of x How do I differentiate expressions involving powers of x? Powers of x are differentiated according to the following formulae: Differentiating terms with positive integer...
CIE A Level Maths: Pure 1复习笔记5.1.2 Definition of Derivatives
Definition of Derivatives What is the derivative of a function? Differentiation is an operation that calculates the rate of change of a function with respect to a variable This means how much the ...
CIE A Level Maths: Pure 1复习笔记5.1.1 Definition of Gradient
Definition of Gradient What is the gradient of a curve? At a given point the gradient of a curve is defined as the gradient of the tangent to the curve at that point A tangent to a curve is a line ...
CIE A Level Maths: Pure 1复习笔记4.4.4 Modelling with Sequences & Series
Modelling with Sequences & Series What do I need to know about modelling with progressions? Many real-life situations can be modelled using progressions If a quantity is changing repeatedly by ...
