I have numbers in vector notation. I need to get polynomial notation from them.
My numbers are {0, 1, 23, 5, 15, 0, 0, 0}. I want to get $x + 23x^2 + 5x^3 + 15x^4$ from this list.
How can I get that polynomial?
Answer
One straightforward approach is to calculate the answer directly:
Total[{0, 1, 23, 5, 15, 0, 0, 0} x^(Range[8] - 1)]
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