So we're going to have this negative cancel out with the negative on the negative 2 and then a 2 times a 2. So it's going to be plus 4 sine of 2x. Let me make sure I did that right. We have the minus 2 or the negative 2 on the outside. Derivative of cosine of 2x is going to be 2 times negative sine of x. So the 2 times 2 is 4. The negative sine of x times the negative right there is a plus.