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Using implicit differentiation, let y equal arccos(x) : y=arccos(x). So x = cos(y), and dx/dy = -sin(y). dy/dx is therefore -1/sin(y). from trig indentities: sin(y) = sqrt(1-cos^2(y)). Substituting gives ...

Introduction: Define constitutional reform and state issues that have occured that call for constituional reform e.g. centralisation of power and the need for devloution. Position your argument --> con...

During inhalation, the diaphragm contracts to flatten and the internal intercostal muscles contract, moving the rib cage up and out. This causes an increase in thoracic cavity volume, causing the pressure...

Firstly, at GCSE it is possible to follow a very rigid structure and receive very high marks. You should write a very brief introduction and about 3 paragraphs with a conclusion that links and prioritises...

Since x=5+i is a solution to f(x)=0 we then know that x=5-i must also be a solution to f(x)=0, by the complex conjugate root theorem.Now we can break f down into the product of a polynomial and these two ...