Defining a Curve

Forum|Forum|8 years ago
September 1, 2017
1 reply
9920 views

Hello to all,

I am interested to know if it is possible to mathmatically define a curve as a function. i.e. if I have an xy plot which I have created a curve for i.e. a polyfit or similar. Is it then possible to get MathCAD to define that plot as a function of x? i.e. if I have a polyfit line (which I understand to essentialy be an extrapolation of the xy plots themselves) can this polyfit line be defined as a function i.e. y(x)?

Thanks,

Andy

Other

Best answer by Werner_E

Here is a sheet in Prime 3.0 format.

Hope it helps.

To use the function without the data availabe you would copy simply the "coeffs" vector (set Prime to show more decimals for better precision) and assign it a variable "coeffs" which you then can use for the function definition as shown.