How To Find A Polynomial Of Degree 3 With Real Coefficients. Consider the following polynomial function: Put this polynomial in \y2:

A real polynomial of degree ≤ 3 can be fit to any given real values at 3 + 1 points. Find a polynomial function f (x) of degree 3 with real coefficients that satisfies the given conditions. Activate this equation, and graph it and the 5 points (activate plot1 to get the 5 points) together.

How To Find The Real Roots Of A Cubic Polynomial. Now let us consider the following polynomial for a cubic equation: The nature of roots of all cubic equations is either one real root and two imaginary roots or three real roots.

The cubic formula given above calculates the real root. If the discriminant is zero, we have a single root. Consider the cubic polynomial p(t)=t3 − 2t2 − 5t + 6.