Well, we increment u's power by one. So this is going to be equal to, and let me not forget this 1 7th out front. So it's going to be 1 7th times, 1 7th times, if we increment the power here, it's going to be u to the 3 1⁄2. 1 1⁄2 plus one is 1 1⁄2 or 3 1⁄2. So it's going to be u to the 3 1⁄2, u to the 3 1⁄2. And then we're gonna multiply this new thing times the reciprocal of 3 1⁄2, which is 2 1⁄3. And I encourage you to verify the derivative of 2 1⁄3 u to the 3 1⁄2 is indeed u to the 1 1⁄2.