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Challenges Evaluate a single variable polynomial equation

Haskell, 20 bytes f x=foldl((+).(x*))0 Try it online! Takes input coefficients from highest degree to lowest. 21 bytes x%(h:t)=h+x*x%t x%_=0 Try it online!

posted 4y ago by xnor‭  ·  edited 4y ago by xnor‭

Answer
#3: Post edited by user avatar xnor‭ · 2020-11-13T23:04:26Z (almost 4 years ago)
  • # [Haskell], 20 bytes
  • <!-- language-all: lang-hs -->
  • f x=foldl((+).(x*))0
  • [Try it online!][TIO-khgv6t15]
  • [Haskell]: https://www.haskell.org/
  • [TIO-khgv6t15]: https://tio.run/##y0gszk7Nyfn/P02hwjYtPyclR0NDW1NPo0JLU9Pgf25iZp6CrUJBUWZeiYKKQpqCoYFCtKGOkY6xjkns/3/JaTmJ6cX/dZMLCgA "Haskell – Try It Online"
  • **21 bytes**
  • <!-- language-all: lang-hs -->
  • x%(h:t)=h+x*x%t
  • x%_=0
  • [Try it online!][TIO-khgv8gyo]
  • [Haskell]: https://www.haskell.org/
  • [TIO-khgv8gyo]: https://tio.run/##y0gszk7Nyfn/v0JVI8OqRNM2Q7tCq0K1hKtCNd7W4H9uYmaegq1CQVFmXomCioKGqqaCoYFCtKGOkY6xjkns/3/JaTmJ6cX/dZMLCgA "Haskell – Try It Online"
  • # [Haskell], 20 bytes
  • <!-- language-all: lang-hs -->
  • f x=foldl((+).(x*))0
  • [Try it online!][TIO-khgv6t15]
  • [Haskell]: https://www.haskell.org/
  • [TIO-khgv6t15]: https://tio.run/##y0gszk7Nyfn/P02hwjYtPyclR0NDW1NPo0JLU9Pgf25iZp6CrUJBUWZeiYKKQpqCoYFCtKGOkY6xjkns/3/JaTmJ6cX/dZMLCgA "Haskell – Try It Online"
  • Takes input coefficients from highest degree to lowest.
  • **21 bytes**
  • <!-- language-all: lang-hs -->
  • x%(h:t)=h+x*x%t
  • x%_=0
  • [Try it online!][TIO-khgv8gyo]
  • [Haskell]: https://www.haskell.org/
  • [TIO-khgv8gyo]: https://tio.run/##y0gszk7Nyfn/v0JVI8OqRNM2Q7tCq0K1hKtCNd7W4H9uYmaegq1CQVFmXomCioKGqqaCoYFCtKGOkY6xjkns/3/JaTmJ6cX/dZMLCgA "Haskell – Try It Online"
#2: Post edited by user avatar xnor‭ · 2020-11-13T23:02:09Z (almost 4 years ago)
  • # [Haskell], 20 bytes
  • <!-- language-all: lang-hs -->
  • f x=foldl((+).(x*))0
  • [Try it online!][TIO-khgv6t15]
  • [Haskell]: https://www.haskell.org/
  • [TIO-khgv6t15]: https://tio.run/##y0gszk7Nyfn/P02hwjYtPyclR0NDW1NPo0JLU9Pgf25iZp6CrUJBUWZeiYKKQpqCoYFCtKGOkY6xjkns/3/JaTmJ6cX/dZMLCgA "Haskell – Try It Online"
  • # [Haskell], 20 bytes
  • <!-- language-all: lang-hs -->
  • f x=foldl((+).(x*))0
  • [Try it online!][TIO-khgv6t15]
  • [Haskell]: https://www.haskell.org/
  • [TIO-khgv6t15]: https://tio.run/##y0gszk7Nyfn/P02hwjYtPyclR0NDW1NPo0JLU9Pgf25iZp6CrUJBUWZeiYKKQpqCoYFCtKGOkY6xjkns/3/JaTmJ6cX/dZMLCgA "Haskell – Try It Online"
  • **21 bytes**
  • <!-- language-all: lang-hs -->
  • x%(h:t)=h+x*x%t
  • x%_=0
  • [Try it online!][TIO-khgv8gyo]
  • [Haskell]: https://www.haskell.org/
  • [TIO-khgv8gyo]: https://tio.run/##y0gszk7Nyfn/v0JVI8OqRNM2Q7tCq0K1hKtCNd7W4H9uYmaegq1CQVFmXomCioKGqqaCoYFCtKGOkY6xjkns/3/JaTmJ6cX/dZMLCgA "Haskell – Try It Online"
#1: Initial revision by user avatar xnor‭ · 2020-11-13T23:00:33Z (almost 4 years ago) 
# [Haskell], 20 bytes

<!-- language-all: lang-hs -->

    f x=foldl((+).(x*))0

[Try it online!][TIO-khgv6t15]

[Haskell]: https://www.haskell.org/
[TIO-khgv6t15]: https://tio.run/##y0gszk7Nyfn/P02hwjYtPyclR0NDW1NPo0JLU9Pgf25iZp6CrUJBUWZeiYKKQpqCoYFCtKGOkY6xjkns/3/JaTmJ6cX/dZMLCgA "Haskell – Try It Online"