Polynomial implemented in LabView

[Hariss]

Gents,

I have an third order polynomial (calculated from an function of an item):

y = ax^3 + bx^2 + cx + d, where a, b, c, d are well-known constants.

x = ?

The parameter y is connected to LabView I/O port and it is measured. I need to calculate value of x for each time-step.

I know that I will get three solutions for each calculation. Does anybodu know how it can be implemented in the LabView?

eks:

y = 5*x^3 + 7*x^2 + 3*x + 2, where a=5, b=7, c=3, d=2

x = ?

Regards

Hariss

[becktho]

Hi Hariss

I'm not sure, but this might be a way. It's just an idea so you have to check if it works for you.

Thomas