Edexcel IGCSE Physics: Double Science 復(fù)習(xí)筆記：3.2.4 Snell's Law Snell's Law When light?enters a?denser?medium?(such as glass) it slows down and?bends?towards?the normal How much the light ...
Edexcel IGCSE Physics: Double Science 復(fù)習(xí)筆記：3.2.3 Core Practical: Investigating Refraction Core Practical 4: Investigating Refraction Aim of the Experiment To investigate the refraction ...
Edexcel IGCSE Physics: Double Science 復(fù)習(xí)筆記：3.2.1 Light & Sound Waves Light Visible light is a part of the electromagnetic spectrum which means it is a?transverse wave This means the...
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 In...
Laws of Logarithms What are the laws of logarithms? There are many laws or rules of indices, for example There are equivalent laws of logarithms (for a > 0) There are also some particular result...
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...
"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...
Logarithmic Functions Logarithmic functions a = bx?and?log?b?a = x?are equivalent statements a > 0 b?is called the base Every time you write a logarithm statement say to yourself what it means l...
Exponential Functions Exponential functions Exponential functions of the form?y = ax?with?a > 0?are considered at A level Exponential graphs All graphs of the form?y = ax?will pass through (0, 1...
Modelling with Trigonometric Functions Modelling with trigonometric functions Various real-life situations can be modelled using trigonometric functions You need to be able to interpret the equatio...
北京時(shí)間2022年10月19日，大學(xué)理事會(huì)(College Board)正式開(kāi)放SAT機(jī)考的國(guó)際報(bào)名，全新SAT機(jī)考的備考資源也已上線。從2023年開(kāi)始，美國(guó)以外的所有SAT考試都將轉(zhuǎn)為機(jī)考，美國(guó)SAT考試將在2024年全面轉(zhuǎn)為機(jī)考。 無(wú)論...
Trigonometric Proof Proving trigonometric identities You can use trigonometric identities you already know to prove new identities Make sure you know the?simple trigonometric identities?and?further...
