2022年GCSE成绩8月即将公布，评分系统更新！
由于疫情原因，不管是在国内的孩子们还是在国外的孩子们上学、考试都受到了影响。 英国教育局深知学生们在疫情期间受到的影响很大，所以在今年的考试评分也将会相对宽松一些。 那让我们来看看，今年GCSE考试的相...
AQA A Level Maths: Pure复习笔记7.1.1 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 ...
AQA A Level Maths: Pure复习笔记6.3.3 Using Log Graphs in Modelling
Using Log Graphs in Modelling What are log graphs? Log graphs are used when the scale of a graph increases or decreases exponentially It can very difficult to read specific values from graphs with ...
AQA A Level Maths: Pure复习笔记6.3.2 Using Exps & Logs in Modelling
Using Exps & Logs in Modelling What is exponential modelling? Exponential modelling is where real-life situations are modelled using exponential growth and decay Exponential growth is typically...
AQA A Level Maths: Pure复习笔记6.3.1 Exponential Growth & Decay
Exponential Growth & Decay What are exponential growth and exponential decay? y = Aekt is exponential growth y = Ae-kt is exponential decay k > 0 so plus or minus sign in equation immediatel...
AQA A Level Maths: Pure复习笔记6.2.2 Exponential Equations
Exponential Equations What are exponential equations? An equation where the unknown is a power In simple cases the solutions can be “spotted” How do I solve exponential equations? Laws of Indices a...
AQA A Level Maths: Pure复习笔记6.2.1 Laws of Logarithms
Laws of Logarithms What are the laws of logarithms? Two of these were seen in the notes Logarithmic Functions Beware … … log (x + y) ≠ log x + log y Results apply to ln too How do I use the laws of...
AQA A Level Maths: Pure复习笔记6.1.4 Derivatives of Exponential Functions
Derivatives of Exponential Functions What is the derivative of e? y = ex has the particular property ie for every real number x, the gradient of y = ex is also equal to ex (see Derivatives of Expon...
AQA A Level Maths: Pure复习笔记6.1.3 "e"
"e" Exponential Function What is e, the exponential function? The exponential function is y = ex e is an irrational number e ≈ 2.718 As with other exponential graphs y = ex passes through (0, 1) ha...
