3.24.1 Top new questions this week

3.24.1.1 Query: adding additional operator changes meaning of preceding operators

http://mathematica.stackexchange.com/questions/133124/query-adding-additional-operator-changes-meaning-of-preceding-operators

 
Consider the following query: 
 
Range[5] // Query[Select[EvenQ] /* Append[1], f] 
 
(* {f[2], f[4], 1} *) 
 
 
It selects the even numbers, applies f to them and finally appends 1 to the list.  As expected,  ...
 

- asked by WReach (15 votes), answered by WReach (15 votes)

3.24.1.2 Why does Mathematica think this series doesn't converge?

http://mathematica.stackexchange.com/questions/132982/why-does-mathematica-think-this-series-doesnt-converge

 
Bug introduced in 10.0 and persisting through 11.0 (reported as CASE:3790525) 
 
 
 
Here's a simple series: 
 
Sum[t^k DiscreteDelta[k]/k!,{k,0,Infinity}] 
 
 
Mathematica says that it doesn't converge. But  ...
 

- asked by Ruslan (13 votes), answered by Jules Lamers (9 votes)

3.24.1.3 Joining two lists with relational operators

http://mathematica.stackexchange.com/questions/132928/joining-two-lists-with-relational-operators

 
I have two lists liste = {x, -y, y, -z} and listv = {1, -2, 3, -4}, which represent the inequities obtained evaluating liste - listv <= 0. How do I reassemble or join those two separate lists into  ...
 

- asked by nanjun (13 votes), answered by Kuba (15 votes)

3.24.1.4 What assumptions do I need to make Mathematica integrate a function?

http://mathematica.stackexchange.com/questions/133052/what-assumptions-do-i-need-to-make-mathematica-integrate-a-function

 
When I feed Mathematica the following integral: 
 
Integrate[Sqrt[(A - x) (B - x)/x], {x, 0, B}] 
 
 
it spits it back out without evaluating it. However, it can evaluate the integral 
 
Integrate[Sqrt[(2 -  ...
 

- asked by user45146 (11 votes), answered by Artes (12 votes)

3.24.1.5 Do Apple Watch + Mathematica integrations still work?

http://mathematica.stackexchange.com/questions/133358/do-apple-watch-mathematica-integrations-still-work

 
I tried to follow this blog post: Instant Apps for Apple Watch, but none of the examples given worked, instead, they would simply hang on the "loading" screen. 
 
 
 
Can anyone verify if this  ...
 

- asked by M.R. 9votes

3.24.1.6 Locate Start and End Positions of Repeated Sequences in a list

http://mathematica.stackexchange.com/questions/133164/locate-start-and-end-positions-of-repeated-sequences-in-a-list

 
ListA = {14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 12, 12, 12, 14, 14, 14, 12, 
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,  ...
 

- asked by SPIL (8 votes), answered by Suba Thomas (5 votes)

3.24.1.7 How can I add noise to a neural network input?

http://mathematica.stackexchange.com/questions/133090/how-can-i-add-noise-to-a-neural-network-input

 
A common "trick" in neural network training is to train an autoencoder using a "degraded" sample as input and the original sample as target output. The layer type DropoutLayer[] is made for this  ...
 

- asked by nikie (8 votes), answered by nikie (5 votes)