I'm interested in labelling my latex equation, by giving the physical phenomenon contributing to the term. For instance `x = f(y) + g(y)`

. So a horizontal curly bracket to explain that `f(y)`

is derived from some phenomenon, say resistance and `g(y)`

is derived some other phenomenon, say gravity.

How can I give a name to `f(y)`

as resistance and `g(y)`

as gravity in the equation?

Hope I'm able to explain my intentions.

Thank you,

Aditya

## Best Answer

You have

`\underbrace`

from`amsmath`

and`\underbracket`

from`mathtools`

(which loads amsmath). I added some horizontal adjustment with the`\clap`

command (from mathtools), since the labelled terms are short: