# How to join n amount of functions **URL:** \ **Category:** Questions\ **Created:** [July 4, 2026, 2:55pm UTC](https://cl.desmos.com/t/how-to-join-n-amount-of-functions/8770 "2026-07-04T14:55:09Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Burrito](https://avatars.discourse-cdn.com/v4/letter/b/bc79bd/32.png) [@Burrito](https://cl.desmos.com/u/Burrito)\ **Post date:** [July 4, 2026, 2:55pm UTC](https://cl.desmos.com/t/how-to-join-n-amount-of-functions/8770/1 "2026-07-04T14:55:09Z")
Ive asked this before but i didn’t quite get what i needed.. If a had a function called f(x) and all it did was return [x…x+2] (just an example) ( f(x) = [x…x+2] ) Could i have another fuction called say J(f,L) and what it did is i type in the fuction im using ( in this case f() and the numbers it inputs. And then Joins them at the end ( J( f(x), x=[1,2,3,4,5]) ) – would output [1,2,3,2,3,4,3,4,5,4,5,6,5,6,7] Basically it does join(f(1),f(2),f(3),f(4),f(5)) Also im no sure if you can put a function through a function so if it is just deafult to f(x) its fine: J([1…3] → join(f(1),f(2),f(3) thx 😛 ---
**Author:** ![Guzman\_Tierno](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/guzman_tierno/32/6149_2.png) [@Guzman\_Tierno](https://cl.desmos.com/u/Guzman_Tierno)\ **Post date:** [July 4, 2026, 10:05pm UTC](https://cl.desmos.com/t/how-to-join-n-amount-of-functions/8770/2 "2026-07-04T22:05:09Z")
this: [https://www.desmos.com/calculator/eypy5wxyni](https://www.desmos.com/calculator/eypy5wxyni) ---
**Author:** ![Guzman\_Tierno](https://yyz1.discourse-cdn.com/flex031/user_avatar/cl.desmos.com/guzman_tierno/32/6149_2.png) [@Guzman\_Tierno](https://cl.desmos.com/u/Guzman_Tierno)\ **Post date:** [July 5, 2026, 9:17am UTC](https://cl.desmos.com/t/how-to-join-n-amount-of-functions/8770/3 "2026-07-05T09:17:50Z")
Edit: there was an error, I corrected it