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What is Opportunity Cost?

Opportunity cost is defined as the next best alternative foregone. An example of this is: Someone gives up going to see a movie to study for a test in order to get a good grade. The opportunity cost is the c...
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Answered by Varad H. • Economics tutor
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What is the Dopamine Hypothesis and how can I evaluate it?

The dopamine hypothesis is the theory that schizophrenia is caused by too much dopamine in the brain. The theory states that due to dopamine being a neurotransmitter that instigates the firing of neurons in ...
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Answered by Alex K. • Psychology tutor
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Expanding and simplifying, e.g. (x+4)(x-2)

To break this down easily we can use a technique called a 'Farmers Field' ! Drawing a box with a cross through the middle to make 4 mini boxes, we can then use each mini box to write out each part of the ans...
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Answered by James H. • Maths tutor
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What was Durkheim's study of suicide and why does it matter?

It is first necessary to understand why Durkheim carried out this study in the first place and what he was trying to achieve by doing so. As you may remember, Durkheim was a structuralist, and thus believed ...
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Answered by Alex K. • Sociology tutor
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Find the tangent for the line y=x^3+3x^2+4x+2 at x=2

Firstly, differentiate the equation y=x 3 +3x 2 +4x+2 to find the gradient function. The gradient function is dy/dx and is found to be 3x 2 +6x+4 = f'(x) after differentiation. The simple rule is to multiply...
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Answered by Wafi C. • Maths tutor
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