7.17.3 Can you answer these questions?

7.17.3.1 Speeding up this function?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246242

Is there a way to speed this function? 
... 
[performance-tuning]
 

asked by An old man in the sea. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=11313 2 votes

7.17.3.2 Error when integrating with constants?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246300

I'm trying to integrate an ellipse: (x^2)/alpha^2) + ((y^2)/beta^2) = 1. I am not sure if I should have insert constants for alpha and beta  or if there's a way to keep them there. 
This is my code 
<... 
[plotting] [equation-solving] [calculus-and-analysis] [parametric-functions] [integral-equations]
 

asked by user80088 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=80088 1 vote

answered by Daniel Huber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46318 0 votes

7.17.3.3 Is there an analog of ArrayQ for datasets?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=246152

ArrayQ provides a nice way to check for missing data (specifically, it checks if the array is ragged). 
But if you import your data as a dataset, and apply ArrayQ, it will return False for both ragged ... 
[dataset]
 

asked by theorist https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=45215 1 vote