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Find the binomial expansion of (4-8x)^(-3/2) in ascending powers of x, up to and including the term in x^3. Give each coefficient as a fraction in its simplest form. For what range of x is a binomial expansion valid?

(4-8x)^(-3/2) = Factoring out 4^(-3/2) to make binomial expansion easier (1-2x)^(-3/2) = Using the binomial series expansion in the formula booklet, up to the term in x^3 (1+3x+(15/2)x^2+(35/2)x^3)= Simplify...
HT
Answered by Hamish T. • Maths tutor
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'In memory, war seems like a dream' (Samual Hynes, The Soldiers Tale, 1997) Compare the significance of remembering in two other texts you have studied. Remember to include in your answers reference to how meanings are shaped in the texts you are comparin

‘In memory war seems like a dream’ for an audience in the modern day the reality of war, although we possess more knowledge, it is impossible for us to imagine. Remembrance can be disturbing but also comfort...
SI
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Describe how DNA is well-adapted to being a molecule for conserved information storage

DNA is a long, large molecule, which allows a lot of information to be stored within in. It has a sugar-phosphate backbone, which protects it from physical and chemical damage as the phospho-diester linkages...
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Answered by Juliet E. • Biology tutor
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(Economics A-level) Is the cross elasticity of demand for tea likely to be positive or negative following a rise in the price of milk? Explain your answer

Let's first break down the concepts involved in this question. Price elasticity of demand is the responsiveness of the quantity of a good demanded to changes in the price of that good. Cross price elasticity...
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Answered by Dylan G. • Maths tutor
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Describe how ACh transmits nerve impulses across Cholinergic Synapse

1.AP arrives at the presynaptic neurone2.AP stimulates voltage gated Ca ion channels to open3.Increased permeability of Ca ion channels causes synaptic vesicles to fuse with presynaptic membrane4. Exocytosis...
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Answered by Natasha A. • Biology tutor
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