
I feel like an inverse tangent FUNCTION
that's approaching an asymptote.
The Big Bang Theory Season 2, Episode 13

It looks like some ne... FUNCTION
is returning.
Breaking Bad Season 3, Episode 9

In order to FUNCTION better
as a fighting unit,
The Big Bang Theory Season 5, Episode 1

If my life were expressed as a FUNCTION...
The Big Bang Theory Season 2, Episode 16

Guess a wave FUNCTION and vary its parameters
until I found the lowest energy solution.
The Big Bang Theory Season 8, Episode 2