And we're going to have to evaluate that from 0 to 1 half. When you evaluate it 1 half, so I'm going to get negative 1 over pi cosine of pi over 2 minus 2 times 1 half to the fourth power is 1 sixteenth. So that's it evaluated at 1 half. 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.