Polynomial equations
Prism offers first, second, third and fourth order polynomial equations. Although few chemical or pharmacological models are described by polynomial equations, these equations are often used to fit standard curves. The higher order equations have more inflection points.
Unlike all other equations, you don't have to worry a bit about initial values when fitting data to polynomial equations. You will get exactly the same answer no matter what the initial values are.
The "order" of a polynomial equation tells you how many terms are in the equation.
| Order | Equation |
| First |  |
| Second |  |
| Third |  |
| Fourth |  |
You can enter a higher-order equation (up to 14th order) as a user-defined equation (or select one from the equation library).