Why is (-1) ^2.2 = -1?

Answer: One of the values of (-1)^{2.​2} is -1, but there are four other (compl.​.​.​ Long's Digest Top Stories For You Why is (-1) ^2.2 = -1? Alan Bustany, Trinity Wrangler, 1977 IMO Written Oct 17, 2015 One of the values of [math](-1)^{2.2}[/math] is [math]-1[/math], but there are four other (complex) values that mean you ought not to use the equality symbol! [math]2.2=\frac{11}{5}[/math] ... Read More » I found an iPhone X on a sidewalk. I kept it switched on for days waiting for someone to call it. No one did. Now is marked as lost and iCloud locked. What can I do with it? Marie Maresh Written Sep 20 You can go to the lock screen and act like you are going to make an emergency call. Then you will see the prompt for medical ID. If they have filled this in, their emergenc...  Read More » Is Earth 6000 years old? Chrys Jordan, still lives there Written Mon I'm aware that the Earth is 4,5 billion years old. Unless you believe that God is dishonest and has created false evidence, that's the only conclusion to be drawn. I've also...  Read More » What are differential equations all about? It seems strange that one type of equation gets its own college course. Dean Rubine, I can do complex number problems with i or j. Updated Jan 7 Differential equations deserve and indeed get more than a single course. What's strange is that Trigonometry takes a year to teach two triangles, 30/60/90 and 45/45/90. Diff...  Read More » Why do so many programmers not understand the theory of monads? Panicz Godek, Software Developer at Kayon-eu (2018-present) Updated Sep 29 Although it may seem ironic, the question "why do so many programmers not understand the theory of monads" has the same answer as "why do so many programmers understand the...  Read More » Is day trading profitable? Justin Medlin, Systematic trader, founding member of Systematic-Traders Written May 20, 2016 I have to disagree with some of the posts here, with all due respect. . As someone who has day traded the markets in an automated/algorithmic fashion for years, I'd have to ...  Read More » A²-B²=A²+2AB+B²? Only solution is B=0? Jan van Delden, MSc Math and still interested Written Jan 8 We have: [math]A^2-B^2=(A-B)(A+B)[/math] and [math]A^2+2AB+B^2=(A+B)(A+B)\tag{1}[/math] ... Read More » Why do the British drive on the left-hand side of the road? Gary Barnet Updated Dec 2 I looked this up a few decades ago when I had people telling me I am from a country where we drive on the wrong side of the road - this is what I found out back then. Histor...  Read More » Why are phones in China so cheap? Aakash Sachdev, Procurement & Sourcing Engineer in China Written Apr 19 Phones in China aren't cheap; especially brands like IPhone or Samsung. Chinese-brand phones are cheaper in China? Yes. And why is this the case? The reason is not a single ...  Read More » If 20 birds are sitting in a tree and a hunter shoots one, how many birds are left in the tree? Charles Grutman, former Attorney Written Dec 14 Good question. It has a lot of variables. For example, what sort of weapon is the hunter using? Is it a gun with or without a silencer? This would determine if other birds i...  Read More »   Read More in Your Feed Follow Quora on: Get the App for iOS and Android This email was sent by Quora (650 Castro Street #450, Mountain View, CA 94041). If you don't want to receive this type of email in the future, please unsubscribe.http://www.quora.com/