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Recent questions in study groups:

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**Maths Discussion Group **
Hello mates! Does anyone know how to apply the Chain Rule to any of these questions? Thank you!

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**Business, Economics and Commercial Studies Discussion Group **
Suppose that a country's inflation rate increases sharply. What happens to the inflation tax on the holders of money? Why is wealth that is held in savings accounts not subject to a change in the inflation tax? Can you think of any way holders of savings accounts are hurt by the increase in the inflation rate?

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**Special Needs Discussion Group **
What is the place of Mathematics Education into general theory of Education?

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**Special Needs Discussion Group **
What main elements would you identify as characteristic in a Foucauldian Education?

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**Business, Economics and Commercial Studies Discussion Group **
Beef and leather belts are complements in production. If people’s concern about health shifts the demand curve for beef leftward, the result in the market for leather belts will be

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**Statistics Discussion Group **
One company's ID cards consist of 5 letters followed by 2 digits. How many cards can be made if repetitions are allowed? If repetitions are not allowed?

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**Business, Economics and Commercial Studies Discussion Group **
Why might uncertainty arise during a period of sustained price rises?
a) Because resource costs will increase
b) Because a redistribution of income process will take place
c) A real reduction in international competitiveness will arise
d) Inflation tends to cause things to be less predictable and this makes planning more difficult

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**Business, Economics and Commercial Studies Discussion Group **
Good morning mates! Is there someone who understands employment and unemployment? I am trying to answer this question and I have attached the tabel.
Describe the household survey of unemployment and, in the context of the survey, explain what is meant the terms below and give the number or rate of each based on the table below for the following dates-- December 2007; June 2009; and July 2017:
a) employed
b) unemployed
c) not in the labor force
d) the unemployment rate
e) the labor force participation rate
f) the employment rate (employment -population ratio)
g) if the answer for 'e' in 12/07 were the same as in 1/20 and the number of employed in 1/20 remained the same at 158,714,000, how many people would be unemployed in 1/20 and what, therefore, would the unemployment rate be in 1/20?

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**Maths Discussion Group **
Hello guys. How do you solve an integration like this one?

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**Art Discussion Group **
What is the name of the artist that painted this?

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**Maths Discussion Group **
Can someone explain when to use the product rule?

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**Maths Discussion Group **
Hello guys. How can I evaluate this integral?
Integral of cos5xcos2x?

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**Computational and Applied Mathematics Discussion Group **
Hi pips! Can someone help me with this question:
A particle of mass m moves in R3 under a central force F(r) = −dV/dr , in spherical coordinates, so (x, y, z) = (r cos(φ) sin(θ), r sin(φ) sin(θ), r cos(θ)).
Find the Lagrangian from first principles, in terms of (r, θ, φ) and their time derivatives.
Hence
(a) show that h, defined by h = mr2φ˙ sin2(θ) is a constant of the motion.
(b) derive the other two equations of motion.

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**Computer Science and IT Discussion Group **
What's the best way to learn competitive programming?

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**Business, Economics and Commercial Studies Discussion Group **
Name:Roles and responsibility of four participants in the economy.