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USQ Dashboard 2 January 2001 CO Assignment-3 With Rubric.pdf X + f → C usqstudydesk.usq.edu.au/m2/pluginfile.php/3381788/mod_resource/content/1/Assignment-3%20with%20rubric.pdf E 2 January 2001 2 / 5 100% + ) : Question 2: [35 marks Find all critical points of the function z= x² - xy + y + 3x – 2y +1 and determine their character, that is whether there is a local maximum, local minimum, saddle point or none of these at each critical point. In each critical point find the function value in the exact form (don't use a calculator to convert your result to the floating-point format). 2 Rubric: 3 marks for the correct calculation of the partial derivative with respect to x; 3 marks for the correct calculation of the partial derivative with respect to y; 5 marks if the set of equations to determine critical points is found correctly; 6 marks if the critical point is found correctly; 4 marks for the correct calculation of number A: 4 marks for the correct calculation of number B; 4 marks for the correct calculation of number C: 2 marks for the correct calculation of the discriminant D; 4 marks for the correct determination of the nature of the critical point. Activate Windows Go to Settings to activate Windows. [40 marks) Question 3: o Type here to search O 9 e 19°C Cloudy na 4) ENG 11:04 PM 4/25/2022