IB DP Maths: AI HL復(fù)習(xí)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(fù)習(xí)筆記 5.2.2 Changes of State
Edexcel IGCSE Physics 復(fù)習(xí)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(fù)習(xí)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(fù)習(xí)筆記 5.2.1 Solids, Liquids & Gases
Edexcel IGCSE Physics 復(fù)習(xí)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(fù)習(xí)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?...
BMO英國數(shù)學(xué)奧賽對(duì)中國學(xué)生開放，可直接報(bào)名！
重大好消息！ 中國學(xué)生可以直接參加BMO了！ 在此之前，BMO是讓我們“望眼欲穿”的賽事。想要參加BMO，必須先參加SMC（Senior Maths Challenge）并取得優(yōu)異成績，而SMC不接受個(gè)人報(bào)名，必須由英國教育體制的學(xué)校統(tǒng)一...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 5.1.4 Pressure in Liquids
Edexcel IGCSE Physics 復(fù)習(xí)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(fù)習(xí)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(fù)習(xí)筆記 5.1.3 Pressure
Edexcel IGCSE Physics 復(fù)習(xí)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 ...
