4.11.3 Can you answer these questions?

4.11.3.1 Integrating rational functions of several variables over $\mathbb H ^4$
4.11.3.2 Best Wolfram tool for interactive web-based calculator
4.11.3.3 How to get rid of a built-in context from autocomplete?
4.11.3.1 Integrating rational functions of several variables over $\mathbb H ^4$

http://mathematica.stackexchange.com/questions/139631/integrating-rational-functions-of-several-variables-over-mathbbh4

 
Let $W$ be a rational function of $8$ variables $a,b,c,d,e,f,g,h$ from this file, e.g.: 
 
W = (256*b*d*f*(a^5 + b^4*(c - 2*e) - a^4*(3*c + 2*e) - c*(c^2 + d^2)*(e^2 + f^2) + a^3*(2*b^2 + 3*c^2 + d^2 +  ...
 
- asked by Ricardo Buring 4votes
4.11.3.2 Best Wolfram tool for interactive web-based calculator

http://mathematica.stackexchange.com/questions/139954/best-wolfram-tool-for-interactive-web-based-calculator

 
A colleague is considering re-implementing this online "Photon Propulsion Calculator" using a Mathematica-based product. I wanted to ask the community which product would be best. 
 
 
WebMathematica 
 
 
...
 
- asked by ConvexMartian 8votes
4.11.3.3 How to get rid of a built-in context from autocomplete?

http://mathematica.stackexchange.com/questions/139783/how-to-get-rid-of-a-built-in-context-from-autocomplete

 
I have noticed that when I type the name of built-in function Limit in Mathematica, the autocomplete suggests two variants at the top: the first one is the working one, and the second one is just  ...
 
- asked by user372003 4votes