Final answer:
To make the equation 1/3 = 0 into an exact equation, the integrating factor is 1.
Step-by-step explanation:
To make the equation 1/3 = 0 into an exact equation, we need to find the integrating factor. An exact equation is of the form M(x, y)dx + N(x, y)dy = 0, where Mx = Ny, where Mx denotes the partial derivative of M with respect to x. In this case, M(x, y) = 1/3 and N(x, y) = 0. To find the integrating factor, we need to calculate the partial derivatives of M and N and compare them. Mx = 0 and Ny = 0, which are equal, so the equation is already exact. Therefore, the integrating factor is 1.