Error

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Derivation

1. Initial program 0.0

   \[\left(\frac{\sqrt{2}}{4} \cdot \sqrt{1 - 3 \cdot \left(v \cdot v\right)}\right) \cdot \left(1 - v \cdot v\right)\]
2. Using strategy rm

3. Applied add-cbrt-cube0.0

   \[\leadsto \left(\frac{\sqrt{2}}{4} \cdot \color{blue}{\sqrt[3]{\left(\sqrt{1 - 3 \cdot \left(v \cdot v\right)} \cdot \sqrt{1 - 3 \cdot \left(v \cdot v\right)}\right) \cdot \sqrt{1 - 3 \cdot \left(v \cdot v\right)}}}\right) \cdot \left(1 - v \cdot v\right)\]

4. Applied add-cbrt-cube0.0

   \[\leadsto \left(\color{blue}{\sqrt[3]{\left(\frac{\sqrt{2}}{4} \cdot \frac{\sqrt{2}}{4}\right) \cdot \frac{\sqrt{2}}{4}}} \cdot \sqrt[3]{\left(\sqrt{1 - 3 \cdot \left(v \cdot v\right)} \cdot \sqrt{1 - 3 \cdot \left(v \cdot v\right)}\right) \cdot \sqrt{1 - 3 \cdot \left(v \cdot v\right)}}\right) \cdot \left(1 - v \cdot v\right)\]

5. Applied cbrt-unprod0.0

   \[\leadsto \color{blue}{\sqrt[3]{\left(\left(\frac{\sqrt{2}}{4} \cdot \frac{\sqrt{2}}{4}\right) \cdot \frac{\sqrt{2}}{4}\right) \cdot \left(\left(\sqrt{1 - 3 \cdot \left(v \cdot v\right)} \cdot \sqrt{1 - 3 \cdot \left(v \cdot v\right)}\right) \cdot \sqrt{1 - 3 \cdot \left(v \cdot v\right)}\right)}} \cdot \left(1 - v \cdot v\right)\]

6. Simplified0.0

   \[\leadsto \sqrt[3]{\color{blue}{\left({\left(\frac{\sqrt{2}}{4}\right)}^{3} \cdot \left(1 - \left(3 \cdot v\right) \cdot v\right)\right) \cdot \sqrt{1 - \left(3 \cdot v\right) \cdot v}}} \cdot \left(1 - v \cdot v\right)\]

7. Final simplification0.0

   \[\leadsto \sqrt[3]{\left({\left(\frac{\sqrt{2}}{4}\right)}^{3} \cdot \left(1 - v \cdot \left(v \cdot 3\right)\right)\right) \cdot \sqrt{1 - v \cdot \left(v \cdot 3\right)}} \cdot \left(1 - v \cdot v\right)\]

Runtime

Time bar (total: 1.0m)Debug logProfile

herbie shell --seed 2018221 
(FPCore (v)
  :name "Falkner and Boettcher, Appendix B, 2"
  (* (* (/ (sqrt 2) 4) (sqrt (- 1 (* 3 (* v v))))) (- 1 (* v v))))