Problem 52973. Easy Sequences 45: Second Derivative of Inverse Polynomial Function
The inverse of a function, is the function , that reverses f. That means that if , then . For example, the function to convert celsius temperature to fahrenheit is: , the inverse function (convert from fahrenheit to celsius) is: . So that, and .
Given a polynomial function P (presented as vector of numbers), and a value n, if , write a program that evaluates , where .
For example, if , and , then and . Therefore .
NOTE: It is possible for to return some complex numbers. We are interested only with real values, so in cases where there are no real , please output an empty vector. Also please round-off your output to 4 decimal places, and sorted in ascending order.
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