In this case, the something is our x squared. And of course, we have all of this out front, which is the three times sine of x squared, and I could write it like this, squared. Alright, so we're getting close. Now we just have to figure out the derivative with respect to x of x squared, and we've seen that many times before. That, we just use the power rule, that's going to be two x. Two x. And so if we wanted to write the dy dx, let me get a little bit of a mini drum roll here, this shouldn't take us too long.