Final answer:
To solve the given function f(x,y,z) = x²y - y²z, we need more information and additional equations or values assigned to x, y, and z.
Step-by-step explanation:
The given function is f(x,y,z) = x²y - y²z.
To solve this function, we need more information. We also have another variable v = 2 - x. Without additional equations or values assigned to x, y, and z, we cannot find a specific solution to the equation. We need more information to proceed.