So that's why I like to break it up this way. So then we get this is equal to one half times, and in brackets, in big brackets like this, this first part right over here, we can write as the integral from negative one to zero. What is f of x between negative one and zero? It's one minus two sine of x. One minus two sine of x, d x. And then plus this thing right over here. Plus the integral from zero to one.