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One of the most important things to consider when approaching a source based question, is to consider the context of the text. This can be done by thinking 'who, what, when, and where?' 

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P1: Instances where both agree:

-Use quotes.

-Explain why this shows agreement.

-Repeat for other areas of agreement.

P2: Areas of disagreement:<...

Since there is an x written as a power here, it suggests that this question should be solved using logs (here assume I am using the natural logarithm, which has base e). Taking logs of both sides of the e...

The key here is to realise that tanx = sinx/cosx. If we write out the left hand side of the equation in terms of sine and cosine we get: cosx/sinx + sinx/cosx These two fractions can be put over a common ...

Data Validation
Data validation is the process of comparing data with a set of rules to find out if data is reasonable. 
There are many types of data validation such as:
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