And then from that I'm going to subtract negative 1 over pi cosine of 0. Let me just write it out. So minus negative 1 over pi cosine of pi times 0 minus 2 times 0 to the fourth. So that's just going to be minus 0. So let's evaluate this. So to simplify it, we have a cosine of pi over 2. Cosine of pi over 2 is just going to be 0.