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"url": "https://numbas.mathcentre.ac.uk/api/questions/22995/?format=api",
"name": "Find partial derivatives of $f(x,y)$ and identify its stationary points",
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"full_name": "Christian Lawson-Perfect",
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"description": "<p>Find the stationary points of the function: $f(x,y)=a x ^ 3 + b x ^ 2 y + c y ^ 2 x + dy$ by choosing from a list of points.</p>\n<p>Inputting the values given into the partial derivatives to see if 0 is obtained is tedious! Could ask for the factorisation of equation 1 as the solution uses this. However there is a problem in asking for the input of the stationary points - order of input and also giving that there is two stationary points.</p>"
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