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What actually IS 'differentiation'?

Differentiation is a really common technique in a branch of maths called calculus. The idea is that you have a line on a graph (or a 'function') and we want to know the gradient - the steepness - of that cur...
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Answered by Ben T. • Maths tutor
3835 Views

I have too many abstract ideas for work I could make, but no concrete imagery to work from

This is where researching other artists' work could help - see how they represent what you are finding unrepresentable. Perhaps if they are attempting to depict the sublime, they refer to vast wildernesses, ...
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Answered by Francis R. • Art tutor
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What is the secret to source questions

The secret to source questions is to keep it simple - extra knowledge is useful, but it is important not lose sight of the source at hand or the question. When you look at a source one must identify the NOP ...
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Answered by Dragomir S. • History tutor
2796 Views

What chemical test can be used to differentiate between alkenes and alkanes. Describe and explain the results.

Alkenes decolourise bromine water (orange/brown to colourless) while alkanes cause no change in colour. An electrophilic addition reaction occurs with the alkene. In a reaction between ethene and bromine wat...
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Answered by Sito E. • Chemistry tutor
14356 Views

Sketch the graph of f(x) = sin(x). On the same set of axes, draw the graph of f(x)+2, f(2x) and f(-x). By observing your graphs of f(x) and f(x), if f(a)=1, what is the value of f(-a)?

The first stage is the simple drawing of the sin graph. (could be done on the whiteboard)Then it is a typical A-Level style question to perform three types of transformations on that graph, here we have 1. t...
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Answered by Jessica G. • Maths tutor
4804 Views