I'm trying to do a homework assignment, I've gotten all the problems right but the two remaining. They both involve differentials.

"Find the differential of the function"

y=s/(3+2s)

I thought this would just mean to take the derivative of what remains, but in the area to enter the response it just says "Dy=" rather than "dy/dx=" leading me to believe there's something I'm missing here. Could somebody walk me through doing this problem?