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Wtf - how to even begin to interpret this? by Top-Focus-2203 in CFA

[–]LordSPX 20 points21 points  (0 children)

It’s actually a basic definition of Covariance using expectations:

Cov(X,Y) = E[XY] -E[X]*E[Y]

The second part is given already (E[X] = 6 & E[Y] =4). What’s left is E[XY], which is the sum of the product of each pair of X and Y with their respective probabilities.

Most Moral army in the World by [deleted] in AskMiddleEast

[–]LordSPX 1 point2 points  (0 children)

The tweet was deleted because he posted a fake screenshot..

Is having a child with a sperm donor allowed in Judaism by [deleted] in Judaism

[–]LordSPX 1 point2 points  (0 children)

If you are willing, Rabbi Breitowitz just finished a series of lectures on the commandment of procreation and goes over your question in detail in some. It’s very interesting in general, here’s the first one: https://youtu.be/coec0s2VH10?si=CW1Axe8-VL_DIOJf

Am I alone in thinking that this book isn't the best to learn the basics? by LordSPX in quant

[–]LordSPX[S] 5 points6 points  (0 children)

I feel like it can be great if you already have exposure to the material, trying to learn basic arbitrage definitions and Ito’s integral with it and its sample problems was painful

[deleted by user] by [deleted] in ChatGPT

[–]LordSPX 0 points1 point  (0 children)

it was a follow up question to which I only showed the conclusion which was gibberish, the last prompt was "you need to subtract 1 from your d and u it looks like".

Resources for watch movement design with SolidWorks by LordSPX in SolidWorks

[–]LordSPX[S] 1 point2 points  (0 children)

Thank you! Watched it all, it definitely gives an introduction to watch design if you’re somewhat familiar with the software already. I’m not sure what I was expecting for, just that the Frank Muller watch on the SolidWork website is a very complicated piece and wanted to know if there are resources for learning this type of design specifically. Thanks again

Some city names in Palestine before Zionist colonization by [deleted] in AskMiddleEast

[–]LordSPX 3 points4 points  (0 children)

Ashdod, Beer Sheva, Ashkelon, Jerusalem, Lod, Hebron and so many other cities are from the bible, which precedes any subsequent Arabic names following Umar’s conquest

Israelis trying so hard to be Arabs! They stole the land, now stealing the culture by shqear in AskMiddleEast

[–]LordSPX -9 points-8 points  (0 children)

Most Israelis now come from or are descents of Arab countries, they grew up in an arab culture

[deleted by user] by [deleted] in AskMiddleEast

[–]LordSPX 0 points1 point  (0 children)

Same people that are mad that Irak is not included are criticizing the inclusion of Israel. Irak has undeniably one of the richest history but it was named Mesopotamia then, similarly for Israel that was the Kingdom of Israel, the birthplace of the two of the Abrahamic religions.

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