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Ruby, 38 bytes Simple map and sum over the coefficients. No TIO link, this uses numbered lambda parameters which require Ruby 2.7. ->l,x{l.each_with_index.sum{_1*x**_2}}
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#1: Initial revision
by
snail_
·
2020-12-29T09:04:28Z (almost 4 years ago)
# Ruby, 38 bytes
Simple map and sum over the coefficients. No TIO link, this uses numbered lambda parameters which require Ruby 2.7.
```ruby
->l,x{l.each_with_index.sum{_1*x**_2}}
```