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How does the human body regulate its blood glucose levels?

Once a person has eaten a meal, their digestive system will break the nutrients down into smaller components that can travel in the blood to any parts of the body that need them. Any carbohydrates in this fo...
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Answered by Harry B. • Biology tutor
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Discuss the evidence for plate tectonic theory.

This question is a 10 marker and comes at the end of the 25 mark section on Plate Tectonics. When answering a Discuss question it is important to remeber that it is in essence a mini essay, however, it is sh...
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Answered by Philip B. • Geography tutor
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x^2 + y^2 + 10x + 2y - 4xy = 10. Find dy/dx in terms of x and y, fully simplifying your answer.

x 2 + y 2 + 10x + 2y - 4xy = 10 Start by differentiating both sides by x, the terms not containing y are differentiated normally, x 2 becomes 2x, 10x becomes 10, and 10 becomes 0. For the y 2 term, by implic...
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Answered by Guy L. • Maths tutor
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How does a HDD (Hard drive disk) work?

A HDD is a mechanical form of storage, using electromagnetism to store and write data. Mechanical drives are very prone to data lose and breaking when moved around, due to their mechanical nature. They consi...
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Answered by Harvey B. • Computing tutor
4880 Views

Define tanh(t) in terms of exponentials

Whenever you have a define by exponentials question start with: sinh(t)=0.5(e t -e -t ) and cosh(t)=0.5(e t +e -t ) We know tanh(t)=sinh(t)/cosh(t) tanh(t)=0.5(e t -e -t )/0.5(e t +e -t ) =(e t -e -t )/(e t ...
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