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by Mates
3h ago
I am trying to understand the significance of Cantor's diagonal argument. Here are 2 questions just to give an example of my confusion. From what I understand so far about the diagonal argument, it finds a real number that cannot be listed in any nth row, as n (from the set of natural numbers) goes to infinity. It does this by listing real numbers and making a rule that its nth column cannot have a digit in the corresponding nth row. This produces a real number that cannot be listed... Read more ..read more
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7h ago
HI all !!!! If someone can help would be great I am a fairly new seller on amazon, i want to apply a Target Costing approach to my product i will source. I am planning to sell Item X for £9.99, + Amazon Fees(£5.64). How do i calculate Targets cost, to achieved a 25% Margin ..read more
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by sava
11h ago
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by Tsunamibomb
11h ago
An ellipse is a conic section, i.e. it can be described as the surface of a cut through a cone. Given an ellipse, I want to calulate the properties of its corresponding cone and how it was cut out of it. I might later follow up with more questions about the relationship of an ellipse to a cone, but here we start: - The end points of the major axis of the ellipse are points on the cone's surface (mantle) at different heights. What is the (circular) diameter of the cone at each of those two... Read more ..read more
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by Squish93
17h ago
The question states to simplify the expression, I thought I understood canceling common factors but I don’t understand why you would cancel both 4s on one side of the division sign. I’m completely lost at this point. Wouldn’t canceling 4x4 cancel out the -16 and and make it -1? I get 60 ..read more
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by clarko
1d ago
Hi guys could you help me with these questions please ? r<=k<=n, S(n,k)^{r} How I can find the number of partitions of a set {1...n} Into k blocks such that the elements {1...r} must be in different blocks ? How I can find the recurrence relation ? Thanks ..read more
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by dea
1d ago
A triangle as an example the bisector not through the center of figure plane. I'm interesting on trapezoid. We know that by Intermediate value theorem guarantee that there is infinite line can divide trapezoid to be two equal area. I confused the properties and how to generalization ensure that the line will divide trapezoid be two equal area ..read more
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by Win_odd Dhamnekar
2d ago
Toss a fair coin for 5 times. Describe the sample space [imath]\Omega.[/imath] We want to consider functions [imath]X : \omega \rightarrow \{-1,1\}.[/imath] Now describe the probability space [imath]( \Omega, \mathcal{F}_2, \mathbb{P}_2) [/imath] that arises if we want that only combinations of sets of the type [imath]A_i = \{ \omega \in \Omega :\text{ Number of heads} = i\}, i =\{ 0,1,2, 3,4,5 \}[/imath] should be events. How many [imath]\mathcal{F}_2 [/imath] measurable functions X with [imath]\mathbb{E}[X]=0 [/imath] are there? My... Read more ..read more
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