Average Error: 0.5 → 0.5
Time: 54.9s
Precision: 64
Internal Precision: 1344
\[\frac{1}{\sqrt{k}} \cdot {\left(\left(2 \cdot \pi\right) \cdot n\right)}^{\left(\frac{1 - k}{2}\right)}\]
\[\sqrt{\left(\pi \cdot 2\right) \cdot n} \cdot \frac{{\left(\pi \cdot \left(n \cdot 2\right)\right)}^{\left(-\frac{k}{2}\right)}}{\sqrt{k}}\]

Error

Bits error versus k

Bits error versus n

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Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.5

    \[\frac{1}{\sqrt{k}} \cdot {\left(\left(2 \cdot \pi\right) \cdot n\right)}^{\left(\frac{1 - k}{2}\right)}\]
  2. Initial simplification0.4

    \[\leadsto \frac{{\left(\pi \cdot \left(n \cdot 2\right)\right)}^{\left(\frac{1}{2} - \frac{k}{2}\right)}}{\sqrt{k}}\]
  3. Using strategy rm
  4. Applied *-un-lft-identity0.4

    \[\leadsto \frac{{\left(\pi \cdot \left(n \cdot 2\right)\right)}^{\left(\frac{1}{2} - \frac{k}{2}\right)}}{\color{blue}{1 \cdot \sqrt{k}}}\]
  5. Applied sub-neg0.4

    \[\leadsto \frac{{\left(\pi \cdot \left(n \cdot 2\right)\right)}^{\color{blue}{\left(\frac{1}{2} + \left(-\frac{k}{2}\right)\right)}}}{1 \cdot \sqrt{k}}\]
  6. Applied unpow-prod-up0.4

    \[\leadsto \frac{\color{blue}{{\left(\pi \cdot \left(n \cdot 2\right)\right)}^{\frac{1}{2}} \cdot {\left(\pi \cdot \left(n \cdot 2\right)\right)}^{\left(-\frac{k}{2}\right)}}}{1 \cdot \sqrt{k}}\]
  7. Applied times-frac0.5

    \[\leadsto \color{blue}{\frac{{\left(\pi \cdot \left(n \cdot 2\right)\right)}^{\frac{1}{2}}}{1} \cdot \frac{{\left(\pi \cdot \left(n \cdot 2\right)\right)}^{\left(-\frac{k}{2}\right)}}{\sqrt{k}}}\]
  8. Simplified0.5

    \[\leadsto \color{blue}{\sqrt{\left(\pi \cdot 2\right) \cdot n}} \cdot \frac{{\left(\pi \cdot \left(n \cdot 2\right)\right)}^{\left(-\frac{k}{2}\right)}}{\sqrt{k}}\]
  9. Final simplification0.5

    \[\leadsto \sqrt{\left(\pi \cdot 2\right) \cdot n} \cdot \frac{{\left(\pi \cdot \left(n \cdot 2\right)\right)}^{\left(-\frac{k}{2}\right)}}{\sqrt{k}}\]

Runtime

Time bar (total: 54.9s)Debug logProfile

BaselineHerbieOracleSpan%
Regimes0.50.50.10.40%
herbie shell --seed 2018339 
(FPCore (k n)
  :name "Migdal et al, Equation (51)"
  (* (/ 1 (sqrt k)) (pow (* (* 2 PI) n) (/ (- 1 k) 2))))