Top answers

What does PDO stand for, and what does it mean?

This stands for Preceeding Direct Object, and is a grammatical term. Basically, you must always agree a past participle if there is a direct object that comes before it in the sentence. For example, 'il avai...
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Answered by Hannah E. • French tutor
6625 Views

How to do the chain rule.

The chain rule is used for functions 'inside' other functions. We have learnt to differentiate functions like x^2, y^20, e^x, -sin(x), and we will use these results in the chain rule. Let's look at an exampl...
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Answered by Jamie C. • Maths tutor
4633 Views

How do I find the equation of a tangent to a given point on a curve?

Let's take an example: Curve: y = x^2 Point: (2,4) The equation of the tangent is going to be of the form y = mx + c (standard equation of a straight line), where m is the gradient of the line and c is the i...
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Answered by Theo P. • Maths tutor
4995 Views

What is the difference between reducing balance method depreciation and straight line depreciation?

The reducing balance method takes off a percentage of the value of a Non Current Asset each year. For example a an asset that is valued at £50,000 and depreciated at a rate of 10% per year will be depreciate...
JD
Answered by Jack D. • Accounting tutor
34893 Views

The line AB has equation 3x + 5y = 7, find; a) the gradient of AB b) the x-axis and y-axis intercepts c) sketch the graph

a) Rearrange equation into the form y = mx + c where m is the gradient and c is the y-axis intercept. Gradient AB = -3/5. b) The y-intercept is c which = 7/5. To find x-axis intercept we set y=0 and rearrang...
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Answered by Will H. • Maths tutor
5601 Views