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We will use integration by substitution to solve this integral.

Let 1-x^2=sin^2(u)

This means that:

x^2=1-sin^2(u)=cos^2(u) (using the trigonometric identity sin^2(x)+cos^2(x)=1). The...

First, the key terms in the question should be defined; perfect competition, monopoly, and long run. This should be done in the first paragraph, to pick up to easy band 1 marks.

One could structure...

Network security focused on encryption are strong in raw computer security - the computers can encrypt data fast enough and the encryption is reliable and difficult to break. However, it has its downfalls...

Encapsulation is restricting data and actions to object they are defined in. In other words, no other object can access and modify them directly. In Java encapsulation can be achieved by making an object ...

This problem tests two key sub-topics in calculus, kinematics and the chain rule. Firstly, you must realise that the derivative of a velocity function will give you the acceleration function. So by findin...