Recent content by GreenZorg

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    Graduate Find a 2-arguments function from six constraints on its derivatives

    Thanks again
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    Graduate Find a 2-arguments function from six constraints on its derivatives

    I am doing a PhD in economics so I work with quantities and I forgot to tell you that x>=0 and y>=0 all the time. Sorry for this missing information and thanks for your answer As a matter of fact theta>0 too
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    Graduate Find a 2-arguments function from six constraints on its derivatives

    Hello, I need to find a two-arguments function u(x,y) which satisfies six constraints on its derivatives. x and y are quantities so always positive. 1&2: On the first derivatives: du/dx>0 for all x & du/dy>0 for all y (so u is increasing in x and y) 3&4: On the second derivatives...