So everywhere I see a t, I'm gonna substitute it, I'm gonna use an x instead. And then I could use that later on to integrate it or to solve it in some way. So let's do that. So y one is gonna be 20 times sine of x squared divided by 35, close parentheses, minus, open parentheses, you have negative 0.04 times t to the third power, or sorry, so I'll write times x, x to the third power plus 0.4 times x squared plus 0.96 times x, and then I can close these parentheses. So does that make sense? 20 times sine of x squared divided by 35 minus negative 0.04 x to the third plus 0.4 x squared plus 0.96 times x. All right, there you go.