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A function is defined by f(x)=x/(2x-2)^(1/2): (a)Determine the maximum domain of f. (b)Differentiate f. (c)Find the inflection points of the function's graph.

This is a common A-level question tackling functions and differentiation. (a) First, it should be noted that the function f is defined within the field of real numbers and thus the value of 2x-2 in the squar...
Answered by • Maths tutor
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Describe the passage of blood through the left side of the heart. Include the names of the valves between the chambers.

This is a typical question that could be asked in your exam and so it’s important to break it down in terms of its content, as well as its format. format: this is a describe question and thus doesn’t need va...
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Answered by Lewis H. • Biology tutor
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Topic - force as rate of change of momentum; (i) force on a wall due to water from a hose, (ii) force on a table as a rope is dropped onto it.

The question starts with a simple calculation that illustrates how a force can be calculated as the rate of change of momentum. It should be understood by most students; however, the answer can then be used ...
Answered by • Physics tutor
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'All power flows from the barrel of a gun'. Discuss.

This sort of question appears nebulous at first glance, however, it can be answered both methodically and in an interesting manner, while touching on a variety of political ideologies and concepts. The topic...
Answered by • Politics tutor
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Describe and explain how the human lungs are adapted for efficient gas exchange (3 marks)

There are millions of alveoli (gas exchange surface), so they have a very large surface area collectively, which is further increased by having a folded membrane. A larger surface areas means there is a fast...
Answered by • Biology tutor
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