Features:

The "Curve Fitting" is a polynomial curve fitting software, which facilitates to find and plot polynomial equation, which passes through the user defined points. This software does 2 major roles. i) To find out the polynomial equation which passes through the points specified by the user and to plot that equation as a graph. Features such as zooming in, zooming out, zoom to a selected area and a free movement by mouse click & drag are included in this software, which helps to view the graph for any location at the required view depth. Also this software supports for taking a nice printout of the graph as well as to save the graph as a picture file.

How to start with Curve Fitting software ?

• Open Genius Maker software and click "Curve Fitting" button. It opens the Curve Fitting software window.
• Left side is the graph plotting area and the controls are given at the right side.
• There are 3 frames on the right side.
  1. Add points - To add new points for the polynomial to pass through.
  2. Delete points - To delete a point from consideration.
  3. Viewing controls - To assist you to see various regions of the graph.

EXAMPLE:

• Now let us take an example. Let us try to find the polynomial which passes through the following 4 points.

  • (2,1)
  • (0,0)
  • (-1,3)
  • (4,-3)
• Type x = 2 and y = 1.
• Click "Add Point"
• You can see a small red circle along with the point serial number in the graph area at the location of (2,1). Also you can see a horizontal straight line passing through that point.
• Just below the graph area, the equation for the simplest polynomial curve passing through this point is displayed. Now it reads as y = 1.

• Let us add the second point. Type x = 0 and y = 0.

• Click "Add Point"
• You can see a small red circle along with the point serial number in the graph area at the location of (0,0). Also you can see a straight line passing through the above 2 points.
• Just below the graph area, the equation for the simplest polynomial curve passing through this point is displayed. Now it reads as 2y = 1x.

• Follow the similar procedure to add the third point (-1,3)

• Now the graph becomes a parabola of equation 6y = 7x² - 11x.

• Add the fourth point (4,-3)

• Now the graph becomes a third order polynomial curve of equation 120y = -43x³ + 183x² - 134x.