C4 Summary
The formulae
The formula book available in the examination contains a number of useful formulas for C3. Make sure you know how to use them. Remember, you also need to know the formulae in C1, C2 and C3 too.

The formula book The formula book to be used with the exam contains these formulae: Integration \displaystyle \int \sec^2 kx \, dx = \frac{1}{k} \tan kx \displaystyle \int \tan x \, dx = \ln \sec x \displaystyle \int \cot x \, dx = \ln \sin x = \ln \tan \frac{1}{2}x \displaystyle \int \sec x \, dx = \ln (\sec x + \tan x) = \ln (\tan \frac{1}{2}x + \frac{1}{4}\pi) \displaystyle \int u \frac{dv}{dx} \, dx = uv - \int v \frac{dy}{dx} \, dx

Formulae you should memorise Make sure you know these

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