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Explain 4 key sources of monopoly power.

  1. Legal barriers. Some monopolys are granted their status as monopolys by government for a fixed period. For example, Camelot who operate the National lottery are granted the power to be the sole supp...
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Answered by Cameron L. Economics tutor
17603 Views

Find the volume and surface area of a cylinder, of length 20cm and radius 5cm.

A diagram is often helpful to draw for questions like this. 1.) Volume. For the volume of a cylinder, you must first find the area of the face, and multiply by the length. The formula for this is Vol= πr^...

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Answered by Cameron L. Maths tutor
9193 Views

Find dy/dx of the equation y=x^2 ln⁡(2x^2+1).

This question requires the use of two key rules of differentiating. The first of these is the product rule. The product rule describes a way of differentiating an equation which is the product of two diff...

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Answered by Cameron L. Maths tutor
4790 Views

How can you calculate the distance between 2 points in a grid if they're not on the same horizontal or vertical line?

Recall Pythagoras' theorem. a^2 + b^2 = c^2. Think about this as a triangle, with a and b being the lengths of the 2 perpendicular sides, and c being the length of the hypotenuse. [Drawing on a whiteboard...

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Answered by Tom C. Maths tutor
4371 Views

When integrating, why do we add a constant to the resulting equation?

The +c is to represent the loss in information after differentiation. Remember, integration is just the reverse of differentiation. Say we had this function:

f(x) = 2x^2 + 1 And we differentiate: f...

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Answered by Tom C. Maths tutor
4163 Views

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