There you go. All right, back to work. So one half, open brackets, and now let's take the antiderivative of one minus two sine of x. Antiderivative of one with respect to x is just x. Negative two sine of x. Well the derivative of cosine of x is negative sine of x, so this is just going to be two cosine of x. And you can verify that derivative of cosine of x is negative sine of x, you have the two out front, so it's negative two sine of x. So we're going to evaluate that at zero and at negative one.