How do I write subscript for more than one character

[alessi.gg]

I’m trying to write subscript for v i+1. I know that I can do subscript like this: $v_i$, but if I wanted to do $v_i+1$ only the ‘i’ would be subscripted. Any help would be appreciated.

[anon45210282]

Hello.

Does this do what you want?

$v_i$$_+$$_1$

[holroy]

Try the following: $v_{i+1}$

[alessi.gg]

Thank you for your help!