It would be useful to have this shape as an option in the Modes column in the FX Parameters section when affecting intensity. I’m no mathematician, but my kid informs me this is referred to as a Wave Function.
In audio editing, when using the effect known as ‘parametric EQ’ you can make this shape narrower or broader. The parameter that determines that is called “Q” (no relation to cues in lighting).
So it would be very useful to have this waveform, with variable Q, for controlling intensity effects.