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Find the area under the curve y=xsin(x), between the limits x=-pi/2 and x=pi/2.

We are going to need to use integration for this problem as it involves finding an area under a curve. Also notice that y is a product of two functions of x ; x and sin(x). This means in this particular case...
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Answered by Oakley Y. • Maths tutor
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Give two features of DNA and explain how each one is important in the semi-conservative replication of DNA.

DNA has a number of important features that allow semi-conservative replication to take place. These include:1. DNA bases are held together by weak hydrogen bonds between bases that can be easily broken, all...
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Answered by Alex M. • Biology tutor
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Describe how a reflex action is coordinated.

1.There are 3 different types of neurons, a receptor and effector that are involved in initiating a reflex response. (Draw these out and label each neurone A B C)2.The receptor detects a stimulus (this is a ...
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Answered by Areej M. • Biology tutor
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By integrating, find the area between the curve and x axis of y = x*exp(x) between x = 0 and x = 1

The area under a curve is found by integration. Area = integral {x exp(x) dx} with limits 0 and 1 It's necessary to use integration by parts to find this integral as there are two x functions multiplied toge...
Answered by • Maths tutor
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What is a 'nomothetic approach’? Suggest one limitation of a nomothetic approach. (2 marks)

A nomothetic approach is based on studying a sample in order to generate general laws or formulate principles of behaviour. A limitation of this approach is that it's quantitative which means in depth resear...
Answered by • Psychology tutor
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