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How do I remember all the case studies?

Psychology involves a lot of memorisation, and how is anybody supposed to remember ALL of those case studies, the names of the psychologists involved, and the results? 'It's too much!' you may cry. Here's wh...
RB
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By expressing cos(2x) in terms of cos(x) find the exact value of the integral of cos(2x)/cos^2(x) between the bounds pi/4 and pi/3.

cos(2x)=cos 2 (x)-sin 2 (x)=2cos 2 (x)-1 Therefore:cos(2x)/cos 2 (x)=(2cos 2 (x)-1)/cos 2 (x)=2cos 2 (x)/cos 2 (x) - 1/cos 2 (x)=2 - 1/cos 2 (x)=2 - sec 2 (x) Integral of sec 2 (x) = tan(x) Integral of 2 = 2...
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Answered by Hugo F. • Maths tutor
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What is the basic Economic problem, and how does Economics as a discipline approach this?

The basic economic problem is usually defined as there being a situation of scarce resources but an unlimited or infinite number of wants and demands for these resources. Economics as a discipline seeks to a...
AM
3148 Views

How do I differentiate an expression of the form y = (ax+b)^n?

In order to differentiate this we need to use the chain rule- first let u = ax + b. Then differentiating, du/dx = a. By substituting into the original expression, we can obtain y = u^n. Differentiating that ...
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Answered by Sam C. • Maths tutor
12552 Views

How can you help with exam technique?

I would present many example s of past papers. showing different techniques of writing working on time management musing important vocabulary which can boost up your grade
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Answered by Ayaan D. • Sociology tutor
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