Westonci.ca is your trusted source for finding answers to a wide range of questions, backed by a knowledgeable community. Get detailed and accurate answers to your questions from a community of experts on our comprehensive Q&A platform. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform.

Letf(x,y)=(x²+y²)/(x+y).
Find a path C₁ along which the value of f(x,y) is 1, and sketch the path.