what is infinity minus infinity

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November 29th, 2020

The question is even amongst your top-voted questions, which is a nice place to see that it is otherwise populated primarily by normal questions. Two PhD programs simultaneously in different countries. @Grace I presumed you were interested in inferring, @Bill Be that as it may, it's not my intent to use my question here as a pedestal to launch into a discussion about the general policies or influence global dynamics. There is no reason that such a question should be community wiki --- it is a legitimate question, which has more or less a definitive answer, namely that such an expression is indeterminate without more information/precision as to what is meant. The limit is ± ∞ (depending on the sign of the coefficient of highest degree). (To be honest I am somewhat surprised that the question isn't a dupe: it seems like such an obvious question to be asked on a Maths website. @Grace The search you did above returns 0 results, not 164 when I run it. ♪, (In the interest of full disclosure: I am the user that flagged that post.). 8 years ago. A set of questions to assess student understanding. This is generally done by finding common denominators. Qalaxia incentivizes and provides students with the necessary help to complete homework on time and to satisfy their curiosity. 2.- When it is possible simplify the expression: Another option is to do the subtraction and to obtain only one expression where probably we will have an indeterminate form of the type infinity divided by infinity, which we can already solve.Let's see an example: "Rubato sufficiently repeated turns into a feature of the rhythm." Irrational Functions Multiply and divide by the conjugate. Have any other US presidents used that tiny table? Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. But we do. It is a legitimate question, which has more or less a definitive answer (namely that such an expression is indeterminate without more information/precision as to what is meant). last edited {{helpRequestObj.timeTextDisplay}}. Can a moderator just decide to transfer the ownership of my question to the community? By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. I meant "popular" on the scale of "question volume", not "question votes" in that particular quote - what plagues some sites is the sheer volume of these questions, not so much how popular an individual question is. Why is “infinity minus infinity” a Community Wiki question? Should any question that is [big-list] be community wiki? and the same question about most popular answer), The quoted sentence is from this blog post, so may read somewhat familiar. I believe them to be fairly accurate in. But that policy does not fit here because this site is - by charter - a general level math site. It appears that Qiaochu converted it to CW after a user flagged it with the following comment: I'd suggest CW ("Sometimes you have content which is valuable and on-topic, but is perhaps a bit too popular." Why is the concept of injective functions difficult for my students? Or you can say that infinity minus 1 is infinity minus 1. How can I find the area of an overlayer structure? At MO they aggressively close low level questions. What is the value of infinity - infinity. 6. indeterminate. What is the decisive point for classifying a certain speech as unacceptable? The student could then ask "why not", and we would explain why, using examples similar to the answer to the question under discussion. I've revised the comment, it should work now. @Rasmus: Dear Rasmus, As an indication of why this question is well-posed, let me offer the following example: if a student were to ask "why must a signed measure assume only finite values (or at least not both infinite and negative infinite values)", the answer would be "because we can't make sense of $\infty - \infty$". Often, particularly with fractions, l'Hôpital's Rule can help in cases where one term with infinite limit is subtracted from another term with infinite limit.

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