Name that Mathmatics term (Periodic "blank") I have no idea what the english term for it is. As a result it is more-or-less impossible to find something about it online. One can give the equation for a sine kurve simply by looking at the graph, taking values such as the amplitute, period etc. and combining them to one equation. If it is what I think it is, wikipedia seems to have a very limited number of information about it. Any resources on that subject at all would be highly appreciated. Thank you for your time. Have a nice day.