About Range
In mathematics, and more specifically in naïve set theory, the range of a function refers to the codomain of the function, though depending upon usage it can sometimes refer to the image. The codomain of a function is some arbitrary super-set of image. In real analysis, it is the real numbers.
UK emergency-alert system: What is it and when is the test?
![UK emergency-alert system: What is it and when is the test?](https://ichef.bbci.co.uk/news/1024/branded_news/4A86/production/_129387091_picture2.jpg)
... The alerts will be broadcast from mobile-phone masts to every compatible phone and tablet within Range - the government or emergency services do not need to know the mobile-phone number or any other personal data...
Weight loss drug semaglutide approved for NHS use
![Weight loss drug semaglutide approved for NHS use](https://ichef.bbci.co.uk/news/1024/branded_news/EF0D/production/_128879116_gettyimages-85074748.jpg)
... It will be recommended for use by people with at least one weight-related health condition, as well as those who have a body mass index (BMI) which puts them near the top of the obese Range...
Independent Venue Week: The history of rock is written on these walls
![Independent Venue Week: The history of rock is written on these walls](https://ichef.bbci.co.uk/news/1024/branded_news/13C7C/production/_128502018_2023-01-20-joiners4.jpg)
... The picture by Natasha [Bat for Lashes] for her album The Bride is really top of the Range...
Nepal air crash: Indian passenger's video caught plane's last moments
![Nepal air crash: Indian passenger's video caught plane's last moments](https://ichef.bbci.co.uk/news/1024/branded_news/140AA/production/_128309028_capture.png)
... " We have also told the families that if they want to travel to Kathmandu, we will make all the arRangements for them, " district magistrate Aryaka Akhauri told reporters...
North Korea fires suspected ICBM into sea
![North Korea fires suspected ICBM into sea](https://ichef.bbci.co.uk/news/1024/branded_news/23BB/production/_127674190_eeb6f9f4cb041379cb161be8e35e79f0ceda92c30_0_5500_36691000x667.jpg)
... It also launched a short Range ballistic missile the same day...
Microsoft founder's masterpieces on display ahead of blockbuster $1bn auction
![Microsoft founder's masterpieces on display ahead of blockbuster $1bn auction](https://ichef.bbci.co.uk/news/1024/branded_news/14F1A/production/_127068758_img_6096.jpg)
... " I don t think we ve had anything like this in terms of masterpiece Range across 500 years, " he told BBC News...
Elections 2022: How are local councils tackling climate change?
![Elections 2022: How are local councils tackling climate change?](https://ichef.bbci.co.uk/news/1024/branded_news/35F4/production/_124121831_gettyimages-1188076579.jpg)
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Ukraine: Are arms shipments from the West making a difference?
![Ukraine: Are arms shipments from the West making a difference?](https://ichef.bbci.co.uk/news/1024/branded_news/4271/production/_123590071_58944b0b-8771-4293-add7-6338f15d0e3f.jpg)
... The Baltic states have also delivered thousands of weapons including Stingers and Javelin missiles, one of the world s most effective anti-tank weapons with a Range of 2...