Complex polynomial value calculation

A polynomial is defined by the coefficients array, which can be real or complex numbers. The first coefficient belongs to the highest degree term; the last one is the constant term. The number of coefficients automatically defines the polynomial degree. If your polynomial misses a term, just set zero as its coefficient. Both polynomial coefficient and sample variable value can be either real or complex. (For real number, enter zero in the imaginary part.)

Polynomial value

Polynomial coefficients

X point

Complex argument

Calculation precision

Exact

Rounded

Digits after the decimal point: 2

Calculate

Polynomial

 

Polynomial value in x

 

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The calculator can be used for equation solution checking. E.g. this one: Quartic equation or this: Cubic equation.