- #1
canadiangoose
- 1
- 0
Homework Statement
I want to know how to find equation for the interpolated function of any degree. On Mathematica, for example.
The Attempt at a Solution
Unfortunately, on Excel, the plots are deceiving because the points on the plot are actually out of range.
For example, this equation: - 0.037*Math.pow(i,5) + 0.857*Math.pow(i,4) - 8.406*Math.pow(i,3) + 32.33*Math.pow(i,2) - 46.68*i + 260.2
is displayed to be in the range of 0 and 255 between values 1 and 21 for i.
however, when plugging in numbers, values are clearly not in the range. you get a negative number for i =18.
So therefore, is there a more accurate way of finding regression curves for data AND the equation for the curve?