So should I be marked wrong for knowing that the inflection point of a cubic function is the extremum of the 1st derivative, and therefor the point of decreasing returns to scale? It's like telling someone who can use an abacus, is allowed to use an abacus, that he is wrong getting the correct answer through an abacus. But, to mark off points when I can get the correct answer using allowed tools, then that's fucking retarded. If she didn't want to give me partial credit when I got the question wrong, fine, that's my responsibility. If she doesn't want calculator work then she could say no calculators, fine, but that isn't the case. Given how long her exams are I find it absolutely ridiculous that if I can find an easier, quicker, and smarter way to do things that I actually get marked WRONG for finding alternative ways. Lastly, she wants step by step work on shit EASILY computed on a calculator, like determinants of matrixes, border hessian matrixes, etc. She seriously DID NOT KNOW that the inflection point of a cubic function is always the extremum of the 1st derivative, which would be the point of decreasing returns to scale. She literally wants me to do it her way even though my way is mathematically correct. I do know what is going on (I got a 100% on my business calc class, but this lady is nuts), I did it by hand, but because I explained it by inflection point (which is correct), she marked me wrong because she is an asian bitch. Eves, Howard (January 2, 1990), An Introduction to the History of Mathematics (6th ed.It's Econ 507.2: Multi-Variable Calculus and Linear Algebra with Applications, vol. 1 (2nd ed.), Wiley, ISBN 978-7-5 1: One-Variable Calculus with an Introduction to Linear Algebra, vol. 1 (2nd ed.), Wiley, ISBN 978-5-1
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