# Calculate a double integral of four parameter expression?

Posted 2 months ago
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 I have tried to solve this problem using Mathcad and Mathematica, but I didn't get a solution Fisher information matrix should be positive because diagonal values must be positive. Can you please try this for me? Attachments:
 Welcome to Wolfram Community! Please make sure you know the rules: https://wolfr.am/READ-1STThe rules explain how to format your code properly. If you do not format code, it may become corrupted and useless to other members. Please EDIT your post and make sure code blocks start on a new paragraph and look framed and colored like this. int = Integrate[1/(x^3 - 1), x]; Map[Framed, int, Infinity]