IB DP Maths: AI HL復習筆記1.2.2 Logarithms
Introduction to Logarithms What are logarithms? Why use logarithms? Logarithms allow us to solve equations where the exponent is the unknown value We can solve some of these by inspection Exam Tip ...
Edexcel IGCSE Physics 復習筆記 5.2.2 Changes of State
Edexcel IGCSE Physics 復習筆記 5.2.2 Changes of State Changes of State When a substance changes state, the number of molecules in that substance doesn’t change and so neither does its mass T...
IB DP Maths: AI HL復習筆記1.2.1 Exponents
Laws of Indices What are the laws of indices? Laws of indices (or index laws) allow you to simplify and manipulate expressions involving exponents An exponent is a power that a number (called the b...
Edexcel IGCSE Physics 復習筆記 5.2.1 Solids, Liquids & Gases
Edexcel IGCSE Physics 復習筆記 5.2.1 Solids, Liquids & Gases Solids, Liquids & Gases Matter can exist in one of three different states:?solid,?liquid, or?gas Solids In a solid...
IB DP Maths: AI HL復習筆記1.1.3 GDC: Solving Equations
Systems of Linear Equations What are systems of linear equations? A linear equation is an equation of the first order (degree 1) It is usually written in the form?ax + by + c = 0?where?a, b,?and?c?...
Edexcel IGCSE Physics 復習筆記 5.1.4 Pressure in Liquids
Edexcel IGCSE Physics 復習筆記 5.1.4 Pressure in Liquids Pressure in Liquids A fluid is either a?liquid?or a?gas When an object is immersed in a fluid, the fluid will exert pressure, squeezi...
IB DP Maths: AI HL復習筆記1.1.2 Approximation & Estimation
Approximating Values How do I know what to round my answer to? Unless otherwise told, always round your answers to?3 significant figures?(3 s.f.) The first non-zero digit is the first?significant?d...
Edexcel IGCSE Physics 復習筆記 5.1.3 Pressure
Edexcel IGCSE Physics 復習筆記 5.1.3 Pressure Pressure Pressure?is defined as The concentration?of a force or the force per unit area For example, when a drawing pin is pushed ...
Edexcel IGCSE Physics 復習筆記 5.1.2 Core Practical: Determining Density
Edexcel IGCSE Physics 復習筆記 5.1.2 Core Practical: Determining Density Core Practical 9: Determining Density Equipment List Resolution?of measuring equipment: 30 cm ruler = 1 mm Vernier ca...
