2. Let us define a. Verify that f(x, y) = c. Now consider the function git Similarly, consider the function g2 af y(x² - y² + 4x²y²) (x² + y²)² dr b. Argue by symmetry that we must have af ду = xy(x² - y²) x² + y² = r(x² - y² - 4x²y²) (x² + y²)² f(0, t). Differentiate this with respect to t to find fry (0,0). s fy(s, 0) and use it to find fyr(0,0).

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A: I have explained everything with in the solution. Please go through.