Three times x to the second power. So the general notion here is, if I'm taking the derivative of something, whatever this something happens to be, let me just add a new color. It could be, I'm doing the derivative of orange circle to the third power with respect to orange circle, well that's just going to be three times orange or yellow circle. Let me make it an actual orange circle. So the derivative of orange circle to the third power with respect to orange circle, that's going to be three times the orange circle squared. So if I'm taking the derivative of cosine of x to the third power with respect to cosine of x, well that's just going to be, this is just going to be three times cosine of x, cosine of x to the second power. To the second power.