Family of Curves: Writing an Integral as a Summation

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Discussion Overview

The discussion revolves around expressing the area under a family of curves defined by the equation y = (1 - x^1/p)^n as an integral and subsequently as a summation. Participants explore the relationship between the parameters n and p, and the implications for calculating the area under these curves.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant proposes that the area under the curve can be expressed as the integral from 0 to 1 of (1 - x^1/p)^n dx and seeks assistance in converting this integral into a summation.
  • Another participant expresses confusion regarding the purpose of the summation and questions the definition of the family of curves, asking for clarification on whether n or p is the defining parameter.
  • A later reply clarifies that both n and p are positive integers and emphasizes the goal of representing the area under the curve as both an integral and a summation.
  • Another participant challenges the notion of summing over n to find the area under the curve, pointing out that each curve in the family has a different area and that summing over n does not yield the area under any specific curve.

Areas of Agreement / Disagreement

Participants express differing views on the validity of representing the area under the curve as a summation, with some seeking clarification and others challenging the approach. No consensus is reached regarding the correct interpretation of the parameters and the relationship between the integral and the summation.

Contextual Notes

There are unresolved questions about the definitions of the parameters n and p, and how they relate to the family of curves. The discussion also highlights the ambiguity in the purpose of the summation in relation to the integral.

lilcoley23@ho
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f I consider the area of the family of curves as y = (1 - x^1/p)^n where x is greater than or equal to zero but less than or equal to one, I can write that in as integral as

the integral from 0 to 1 of (1 - x^1/p)^n dx but I'm not sure how to write that as a summation, which I have been trying to do. I know the summation looks like:

summation from k=0 to n ((-1)^k (n k) p/(p+k))

Can you please help me with this?
 
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I am confused (although it looks like to me you are confused) as to what your summation is supposed to represent.

First you talk about a family of curves. What is the parameter defining the family (n or p)?

The you talk about an integral over x, but p and n seem to be fixed.

Finally what are you using the sum for? Are you representing the integral as a sum? It doesn't look like that at all.
 
My summation as well as the integral is supposed to represent the area under the curve.

n and p are just positive integers. I need to figure out how the area under the curve can be written as the integral equal to the summation.
 
The area under what curve? You have, as you said, a family of curves and each curve in that family has a different area. Certainly, summing over n will NOT give you the area under any curve.
 

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