Edexcel IGCSE Physics: Double Science 复习笔记：3.2.5 Core Practical: Investigating Snell's law Core Practical 5: Investigating Snell's Law Aim of the Experiment To investigate the refractiv...
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...
Edexcel IGCSE Physics: Double Science 复习笔记：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 复习笔记：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 复习笔记：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...
