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Math Help - Concavity of Cobb-Douglas production function

  1. #1
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    Concavity of Cobb-Douglas production function

    Can anyone help?

    see attachement.
    Attached Thumbnails Attached Thumbnails Concavity of Cobb-Douglas production function-cobb.png  
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  2. #2
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    Re: Concavity of Cobb-Douglas production function

    If someone is interested in the solution, I found it:

    The Cobb-Douglas function is concave if a>=0 b>=0 and a+b<=1

    This can be seen by looking at the Hessian.
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