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What should go into my introduction and how should I structure it?

Of course, the introduction to each of your essays will be different, and there is no universal rule for what to include and how to structure it. However, there are a few principles that can be followed that...
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Answered by Alex W. • History tutor
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Describe how a student wouldn’t test for the presence of lipid molecules in a sample of food

The student would conduct an emulsification test. First of all, crush the sample to increase is surface area. Next add the sample to a test tube of ethanol, allowing for he sample to disolve before adding a ...
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Answered by Tobias S. • Biology tutor
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What is the difference between the past tenses (perfect, imperfect and pluperfect)?

The perfect tense (simple past) is used to describe a completed action. It is formed by an auxiliary verb (either être or avoir) and a past participle. The imperfect is used to describe an action which began...
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Answered by Verity S. • French tutor
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What is the subjunctive and when is it used?

The subjunctive is a “mood” it demonstrates possibility and is used in certain grammatical structures. There is no pattern to these - you just have to learn them! The most common are: purpose clause (followi...
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Answered by Verity S. • Latin tutor
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A useful practice: how to determine the number of solutions of a system of linear equations beforehand

We have a system of n linear equations incorporated by A x = b , with A being a n x p matrix of numeric coefficients, x being a p-dimensional column vector of variables and b being a numeric n-dimensional co...
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