Finding Function for Set of Data?

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Homework Help Overview

The discussion revolves around finding a quadratic function that fits a given set of data points represented in an x and y table. The original poster expresses a desire to understand the algebraic process for determining the coefficients a, b, and c in the quadratic equation y = ax^2 + bx + c.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the use of the least squares method and linear algebra concepts as potential approaches to fitting a quadratic function to the data. There are inquiries about simplifying the process and finding understandable tutorials or examples.

Discussion Status

The conversation is ongoing, with participants exploring different methods and expressing a need for clearer explanations or examples. Some guidance regarding the least squares method has been mentioned, but there is no consensus on a specific approach yet.

Contextual Notes

There is an indication that the original poster may be struggling with the complexity of the algebra involved and is seeking more accessible resources or examples. Additionally, a suggestion to take a course in linear algebra has been made, highlighting a potential gap in foundational knowledge.

Euphoriet
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Finding Function for Set of Data?

Anyone know how to find a function for a set of data (x and y table)... that make up a quadratic function (sort of like a part of a parabola)

I know I can do it in the calculator with QuadReg, but I would really appricaite it if someone could please walk me through the way in which you would do it algebraically.

Like if I had a sample set of data... how would I find the values for a, b and c in:


y= ax^2 + bx + c


I'm assuming that is the general formula typically used.
 
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Linear Algebra, least squares method.
 
That looks like what I need to do BUT, I have found no tutorial that I can understand... anyone care to give an example ... that simplifies this process
 
You need to take a course in linear alegbra.
 

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