/sci/ - Science & Math

Anonymous Sun Sep 8 21:16:25 2019 No.10957512 [View]
File: 151 KB, 1402x616, prob.png [View same] [iqdb] [saucenao] [google]

I am trying to rebuild my intuition regarding probability theory as I will be needing it soon but then I found this. Is this actually Kosher?

I see that they are computing the second-order Taylor expansion of the multivariable function [math] \frac{x}{y} [/math] but then wouldn't that give you an approximation? How are they getting the equalities? Does this have to do with some magic regarding random variables? What am I missing?

Advanced search
Text to find
Subject [?]Search by post subject. Leave empty for any.
Username [?]Search for user name. Leave empty for any user name.
Tripcode [?]Search for tripcode. Leave empty for any.
Email [?]Search by email. Leave empty for any.
Filename [?]Search by image filename. Leave empty for any.
From Date [?]Enter what date to start searching from. Format is YYYY-MM-DD
To Date [?]Enter what date to start searching until. Format is YYYY-MM-DD
Image hash
Search in	All Posts OPs Only
Deleted posts	Show all posts Show only deleted posts Only show non-deleted posts
Internal posts	Show all posts Show only internal posts Show only archived posts
Order	New posts first Old posts first
Capcode	All Posts Only by Users Only by Mods Only by Admins Only by Developers
Results	Posts Threads
Action	[ Simple ]

Navigation
View posts	[+24]	[+48]	[+96]

/sci/ - Science & Math

Search: