• Unbecredible@lemm.ee
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    3 hours ago

    What was the integral and what form does a solution take when there’s no closed form?

    I’m curious because I used to know but forgot most of calculus at this point.

    • thevoidzero@lemmy.world
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      34 minutes ago

      Integration was this (idk if lemmy renders latex):

      int_0^1{x^{-1} (1-x)^{n-1}} dx
      

      [ \int_0^1 {x^{-1} (1-x)^{n-1}}dx ]

      Text: finite integration from 0 to 1 of function x to power negative one, (1-x) to the power (n-1).

      The limit at 0 goes to infinity that’s why there is no solution. But deepseek kept trying different method reaching a conclusion that it can’t be solved then then trying different approach.

      About the closed form, the function without closed form was that function multiplied by x^y (1-x)^y .

      int_0^1{x^{y-1} (1-x)^{n-y-1}} dx

      The first one is a case where y=0. Unless y=0 or n, you have integration, just not a closed form. You can plot the function to see it as well. You’d have to try different values of y and n for it to actually plot something though.