That's, I guess, a very high level intuition for where this expression came from. And so this is going to be equal to 1 tenth times the integral from zero to 10, and b of t is t to the third power minus 6t squared plus 300 dt. And so this is going to be equal to 1 over 10. Take the antiderivative here, so this is going to be t to the fourth over 4, t to the fourth over 4. And then this is going to be, if we increase the exponent here by 1, it's t to the third, and then you divide by 3. So it's negative 6 divided by 3 is negative 2t to the third, and then plus 300t, 300t, and I'm going to evaluate it. I am going to evaluate it at 10, and subtract from that, and evaluate it at 0.