- A very un-useful "feature"
- Commenting a block of code in VBA
- Time in hours and minutes between two dates
- Fitting high order polynomials
- Cubic Splines
- Installing Adobe Reader non-DC version.
- Solving Quadratic, Cubic, Quartic and higher order equations; examples
- Using Goal Seek on Multiple Cells
- Using LINEST for non-linear curve fitting
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Tag Archives: Solve polynomial
Following a comment here: Solving cubic and quartic equations with Excel the Quartic and CubicC User Defined Functions (UDFs) have been amended to fix a problem occurring with some combinations of coefficients. The updated spreadsheet (including full open source code) can be … Continue reading
Today’s download provides analytic solutions to polynomial equations up to fourth order (that is quadratic, cubic and quartic equations) and an iterative method to solve equations of higher order. All these functions are found in the download file: http://interactiveds.com.au/software/Polynomial.zip The … Continue reading
Firstly a clarification from the previous post in this series. The method presented in that post was a direct application of quadratic interpolation, rather than the inverse quadratic method, as implied by the post title. The inverse quadratic method will be … Continue reading
An earlier post presented various methods for finding the roots of polynomial functions based on the use of linear interpolation. It is sometimes advantageous to use a quadratic interpolation function, and methods using this approach will be presented in this and following … Continue reading