Free Download Program Home & Education Mathematics Power-Surface

Power-Surface offer linear / quadratic / higher-power least-square curve / proper surface to give the classification data according to column to a function z = f(x) or z = f(x,y) from one or two self-supporting variable(s), in such a way that tried function form z = a + b.x + c.x2 +... or z = a + b.x + c.y + d.x2 + e.xy + f.y2 +... respectively. To execute the fitting, network function power the above mentioned which is algebraic assumed, and then the sum from square of deviation from z-values (for giving points) from function assumed to be minimized, thereby generate a set of linear equations. This set in then auto-solved by method Gaussian-elimination the standard, give to fitting the parameter (coefficients) a, b, c etc. (users should refer to the tutorials). To avoid the mistake calculation, constant sistim denary and the factor remain to in given (x,y,z) data which is is first to be shifted but finally re-corrected. The Saw-File subroutine allows vertical copying/pasting from data columns classification of text file.

Power-Surface