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How has stress been linked to addiction?

There have been many studies into this area. For example, in 2008, Driessen and his team found that 30% of drug addicts and 15% of alcoholics suffered from post-traumatic stress disorder. This shows a...

Answered by Bobbie C. • Psychology tutor

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Prove e^(ix) = cos (x) + isin(x)

We first write each side of the equation using the maclaurin series for each function.

e^ix = 1 + ix + (ix)²/2! + (ix)³/3! + (ix)⁴/4! + ......

Answered by Pavan M. • Further Mathematics tutor

7806 Views

What is an extended metaphor and how do you build one?

First things first, a metaphor says that one thing literally is another. Some examples you may have heard before... 'raining cats and dogs', 'shooting the messenger', 'the Good Shepher...

Answered by Kate M. • English Language tutor

13605 Views

Whats the best way to keep my Spanish sharp outside of school?

People rarely enjoy the idea of homework outside of the classroom, but there are ways you can keep your Spanish topped up with minimal effort, whether at home or on holiday. Firstly get into a habit of...

Answered by Oliver M. • Spanish tutor

3282 Views

Which tenses do I need to know for my Spanish i/GCSE exam?

For Spanish exams at this level, an A/A* grade requires a solid knowledge of all the indicative tenses so basically, the more you know about the indicative tenses the better. For students expecting or ...

Answered by Oliver M. • Spanish tutor

7015 Views