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How do I analyse a child’s written language development instead of spoken development because I can’t analyse things like phonology or conversational features?

When analysing a child’s piece of writing there are certain things to look out for that we don’t use when analysing speech. For example, we can study orthography (the spelling of words), graphemes (letters o...
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How can I up-level my literature essays?

One way of improving A-level literature essays is demonstrating a good knowledge of different tenses and moods. The correct use of the subjunctive mood is usually key to showing the examiner your extensive k...
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Answered by Megan R. • Spanish tutor
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Describe the function of the enzymes DNA helicase and DNA polymerase.

DNA helicase unwinds DNA by breaking H bonds between DNA strands. DNA polymerase joins adjacent nucleotides by forming phosphodiester bonds between them.
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Answered by Susannah C. • Biology tutor
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Differentiate z = e^(3y^2+5) with respect to y. (Hint: use chain rule.)

We can find dz/dy using chain rule dz/dy=dz/du x du/dy (1) by defining u=3y^2+5 (since the exponent of e is a function of y we call this function u) and rewrite z=e^u. Then, we find dz/du=e^u (2) and du/dy=6...
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Answered by Sophie H. • Maths tutor
3492 Views

Given y = 4x/(x^2 +5) find dy/dx, writing your answer as a single fraction in its simplest form

This function is fraction so the easiest method is to use the quotient rule (though the product rule can be used). Recall the quotient rule dy/dx = [vu' - uv']/[v^2]Note, u and v refer to the numerator and d...
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Answered by Laurence C. • Maths tutor
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