Alevel生物课程高分书籍推荐！
就诸多A-Level学科的难易度而言，生物算是比较简单的一门。然而，A-Level生物涉及的领域广、包含的知识点多，且需要将理论与实践很好地结合起来，这也使得A-Level生物虽然不难，但想得A*也不容易。今天小编带来Al...
Edexcel A Level Further Maths: Core Pure:复习笔记1.1.5 Loci in Argand Diagrams
Loci in Argand Diagrams How do I sketch the locus of oron an Argand diagram? All complex numbers, , that satisfy the equation lie on a vertical line with Cartesian equation Any complex number alon...
Edexcel A Level Further Maths: Core Pure:复习笔记1.1.4 Modulus-Argument Form
Modulus-Argument Form The complex number is said to be in Cartesian form. There are, however, other ways to write a complex number, such as in modulus-argument (polar) form. How do I write a compl...
Edexcel A Level Further Maths: Core Pure:复习笔记1.1.3 Modulus & Argument
Argand Diagrams - Basics What is an Argand diagram? An Argand diagram is a geometrical way to represent complex numbers as either a point or a vector in two-dimensional space We can represent the c...
Edexcel A Level Further Maths: Core Pure:复习笔记1.1.2 Solving Equations with Complex Roots
Solving Quadratic Equations with Complex Roots What are complex roots? Complex numbers provide solutions for quadratic equations which have no real roots Complex roots occur when solving a quadrat...
Edexcel A Level Further Maths: Core Pure:复习笔记1.1.1 Introduction to Complex Numbers
Cartesian Form of Complex Numbers Complex numbers are a set of numbers which contain both a real part and an imaginary part. The set of complex numbers is denoted as . What is an imaginary number? ...
Edexcel A Level Physics:复习笔记13.11 Damping & Plastic Deformation
Damping & Plastic Deformation Damping an oscillator affects its amplitude of oscillation: When damping is increased the amplitude decreased damping and amplitude are inversely proportional to e...
Edexcel A Level Physics:复习笔记13.10 Resonance Graphs
Resonance Graphs A graph of driving frequency f against amplitude A of oscillations is called a resonance curve. It has the following key features: When f < f0, the amplitude of oscillations inc...
Edexcel A Level Physics:复习笔记13.9 Free & Forced Oscillations
Free & Forced Oscillations Free Oscillations Free oscillations occur when there is no transfer of energy to or from the surroundings This happens when an oscillating system is displaced and the...
