Given an array of numbers such as
\[a, b, c\], calculates the sum
c*x⁰ + b*x¹ + a*x². If there are more elements in the array, the series is continued.
If the given array is empty, returns 0.
POLYNOMIAL(xvalue: Number, coefficientsa: Array) => Number
The input value to the power series.
The coefficients by which each successive power of x-value is multiplied.