Once again, this is one over one. That's just going to be one. If we take the antiderivative of this, and then we actually, well, let me just, so this is going to be equal to, the antiderivative of this is, so we're gonna go t to the negative three power, but then we divide by negative three. So an antiderivative of this is going to be, if we don't take the, well, an antiderivative is going to be negative four t to the negative three power, and we saw that over here. Obviously, if you were really just taking an indefinite integral, we would have to put some constant here, but in the definite integral, even if we put a constant here, it would get, assuming the same constant, it would get canceled out when you actually do the calculation. But the antiderivative of this, we increment the exponent, and then we divide by that new exponent. So 12 divided by negative three is negative four, and we're going to evaluate that from at two and at one.