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What is the quotient rule and how is it applied?

The quotient rule is a formula used to differentiate fractions that contain terms of x in both the numerator and the denominator (we usually refer to this as f(x)/g(x)). As it isn't possible to differentiate...
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Answered by Pete H. Maths tutor
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How can I analyse a quote using close reading?

It is important to use quotations as evidence in your essay, but you also need to use them in a way that effectively backs up your argument, rather than simply inserting them after a statement. A good way to...
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Answered by Melissa T. English tutor
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What is Gibbs free energy? How is it useful?

The Gibbs free energy of a process is a measure of how readily that process will proceed on its own - a negative value means that the reaction is spontaneous, a positive value means that it is not, and a val...
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Answered by Murdo M. Chemistry tutor
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How can the first order kinematic (SUVAT) equations be derived?

We start with the following two observations about an object undergoing constant acceleration. First, its acceleration is equal to the change in its velocity over time, hence, a=(v-u)/t. Rearranging gives th...
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Answered by Peter T. Physics tutor
14621 Views

How can the cosine rule be derived?

Sorry in advance for the lack of a diagram, which would have made this explanation so much clearer. Also, the published version of this seems to ignore Unicode formatting, so I will add underscores (_) where...
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Answered by Peter T. Maths tutor
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