Let's say I want to eat at Outback, then have dessert at Baskin Robbins. Can I list their locations, both on the same map, so I can find the closest set ? StuRat (talk) 17:18, 14 April 2017 (UTC)[reply]

You can search using OR as in "Outback" OR "Baskin Robbins". My experience is that you must place each place name in quotes and you must use a capital OR, not a lowercase or. 209.149.113.5 (talk) 18:14, 14 April 2017 (UTC)[reply]

Thanks, that worked ! I was using AND without quotes, with no luck. StuRat (talk) 18:34, 14 April 2017 (UTC)[reply]

Resolved

The other day (now archived) there was a question that if you are given a system of quadratic equations that has either zero or one solution, is determining that NP-complete? This is for a system of quadratic equations in one variable, right? If so, isn't this linear in the number of equations? Take the first two equations, f and g. There are at most two points, x, such that f(x)=g(x). Plug this (or these two) values into the rest of the equations. Then it is easy to determine whether or not the solution (or two solutions) satisfy the rest of the equations or not. Bubba73 ^{You talkin' to me?} 20:34, 14 April 2017 (UTC)[reply]

Shouldn't this Q go to the Math Desk ? StuRat (talk) 21:27, 14 April 2017 (UTC)[reply]

The original was in computing Wikipedia:Reference_desk/Archives/Computing/2017_April_8#Qudratic_Equations_-_Promise_Problem (it is a computing problem). Bubba73 ^{You talkin' to me?} 00:06, 15 April 2017 (UTC)[reply]

If these are all equations in a single real variable I think you are correct. However system of polynomial equations makes it clear that there can be many variables. All the best: Rich Farmbrough, 06:42, 18 April 2017 (UTC).[reply]

Thanks, but could the same idea be used? Take the first few equations that it takes to get a solution (or solutions) and then try them in successive equations? Bubba73 ^{You talkin' to me?} 16:49, 18 April 2017 (UTC)[reply]