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Stationary points occurs when the gradient of the graph is equal to 0, i.e. dy/dx = 0. Differentiate y with respect to x to get dy/dx = 4x + 4.So making 4x + 4 = 0 gives x = -1. Substituting this into the...

When you differentiate the function that gives the gradient. Therefore differentiate to get dy/dx= 15x^2 + 3. Make this equal to 0 to get 15x^2 + 3=0 and rearrange to get the value of x as required so 15x...

In order to analyse the setting in a novel, one must pay extra careful attention to the emotional and descriptive detail used by the author. For instance, if the author writes 'the wind h...

Our A-level knowledge does not give us any identities to be able to integrate this from memory. But what we do have from memory is that the derivative of ln(x) is 1/x. Why would this help us? Let's take a...

A clear, well-thought-out essay structure is just as important as the content of your essay! Not only does it make it easier to write the essay, but it also makes your ideas easier to follow for your exam...