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Find $(\\frac{\\partial z}{\\partial y})_x$ for the function:
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", "contributors": [{"name": "Lubomira Tosheva", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/3619/"}]}]}], "contributors": [{"name": "Lubomira Tosheva", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/3619/"}]}