Average Error: 30.5 → 30.5
Time: 1.1m
Precision: 64
Internal Precision: 1408
\[{\left(x + 1\right)}^{\left(\frac{1}{3}\right)} - {x}^{\left(\frac{1}{3}\right)}\]
\[\frac{{\left({\left(x + 1\right)}^{\left(\frac{1}{3}\right)}\right)}^{3} - {\left(\sqrt{{x}^{\left(\frac{1}{3}\right)}} \cdot \sqrt{{x}^{\left(\frac{1}{3}\right)}}\right)}^{3}}{{\left(1 + x\right)}^{\left(\frac{1}{3}\right)} \cdot {\left(1 + x\right)}^{\left(\frac{1}{3}\right)} + {\left(e^{\sqrt[3]{\frac{\log x}{3}} \cdot \sqrt[3]{\frac{\log x}{3}}}\right)}^{\left(\sqrt[3]{\frac{\log x}{3}}\right)} \cdot \left({\left(1 + x\right)}^{\left(\frac{1}{3}\right)} + {x}^{\left(\frac{1}{3}\right)}\right)}\]

Error

Bits error versus x

Derivation

  1. Initial program 30.5

    \[{\left(x + 1\right)}^{\left(\frac{1}{3}\right)} - {x}^{\left(\frac{1}{3}\right)}\]
  2. Using strategy rm
  3. Applied flip3--30.4

    \[\leadsto \color{blue}{\frac{{\left({\left(x + 1\right)}^{\left(\frac{1}{3}\right)}\right)}^{3} - {\left({x}^{\left(\frac{1}{3}\right)}\right)}^{3}}{{\left(x + 1\right)}^{\left(\frac{1}{3}\right)} \cdot {\left(x + 1\right)}^{\left(\frac{1}{3}\right)} + \left({x}^{\left(\frac{1}{3}\right)} \cdot {x}^{\left(\frac{1}{3}\right)} + {\left(x + 1\right)}^{\left(\frac{1}{3}\right)} \cdot {x}^{\left(\frac{1}{3}\right)}\right)}}\]
  4. Applied simplify30.4

    \[\leadsto \frac{{\left({\left(x + 1\right)}^{\left(\frac{1}{3}\right)}\right)}^{3} - {\left({x}^{\left(\frac{1}{3}\right)}\right)}^{3}}{\color{blue}{{\left(1 + x\right)}^{\left(\frac{1}{3}\right)} \cdot {\left(1 + x\right)}^{\left(\frac{1}{3}\right)} + {x}^{\left(\frac{1}{3}\right)} \cdot \left({\left(1 + x\right)}^{\left(\frac{1}{3}\right)} + {x}^{\left(\frac{1}{3}\right)}\right)}}\]
  5. Using strategy rm
  6. Applied add-sqr-sqrt30.5

    \[\leadsto \frac{{\left({\left(x + 1\right)}^{\left(\frac{1}{3}\right)}\right)}^{3} - {\color{blue}{\left(\sqrt{{x}^{\left(\frac{1}{3}\right)}} \cdot \sqrt{{x}^{\left(\frac{1}{3}\right)}}\right)}}^{3}}{{\left(1 + x\right)}^{\left(\frac{1}{3}\right)} \cdot {\left(1 + x\right)}^{\left(\frac{1}{3}\right)} + {x}^{\left(\frac{1}{3}\right)} \cdot \left({\left(1 + x\right)}^{\left(\frac{1}{3}\right)} + {x}^{\left(\frac{1}{3}\right)}\right)}\]
  7. Using strategy rm
  8. Applied pow-to-exp30.5

    \[\leadsto \frac{{\left({\left(x + 1\right)}^{\left(\frac{1}{3}\right)}\right)}^{3} - {\left(\sqrt{{x}^{\left(\frac{1}{3}\right)}} \cdot \sqrt{{x}^{\left(\frac{1}{3}\right)}}\right)}^{3}}{{\left(1 + x\right)}^{\left(\frac{1}{3}\right)} \cdot {\left(1 + x\right)}^{\left(\frac{1}{3}\right)} + \color{blue}{e^{\log x \cdot \frac{1}{3}}} \cdot \left({\left(1 + x\right)}^{\left(\frac{1}{3}\right)} + {x}^{\left(\frac{1}{3}\right)}\right)}\]
  9. Applied simplify30.5

    \[\leadsto \frac{{\left({\left(x + 1\right)}^{\left(\frac{1}{3}\right)}\right)}^{3} - {\left(\sqrt{{x}^{\left(\frac{1}{3}\right)}} \cdot \sqrt{{x}^{\left(\frac{1}{3}\right)}}\right)}^{3}}{{\left(1 + x\right)}^{\left(\frac{1}{3}\right)} \cdot {\left(1 + x\right)}^{\left(\frac{1}{3}\right)} + e^{\color{blue}{\frac{\log x}{3}}} \cdot \left({\left(1 + x\right)}^{\left(\frac{1}{3}\right)} + {x}^{\left(\frac{1}{3}\right)}\right)}\]
  10. Using strategy rm
  11. Applied add-cube-cbrt30.5

    \[\leadsto \frac{{\left({\left(x + 1\right)}^{\left(\frac{1}{3}\right)}\right)}^{3} - {\left(\sqrt{{x}^{\left(\frac{1}{3}\right)}} \cdot \sqrt{{x}^{\left(\frac{1}{3}\right)}}\right)}^{3}}{{\left(1 + x\right)}^{\left(\frac{1}{3}\right)} \cdot {\left(1 + x\right)}^{\left(\frac{1}{3}\right)} + e^{\color{blue}{\left(\sqrt[3]{\frac{\log x}{3}} \cdot \sqrt[3]{\frac{\log x}{3}}\right) \cdot \sqrt[3]{\frac{\log x}{3}}}} \cdot \left({\left(1 + x\right)}^{\left(\frac{1}{3}\right)} + {x}^{\left(\frac{1}{3}\right)}\right)}\]
  12. Applied exp-prod30.5

    \[\leadsto \frac{{\left({\left(x + 1\right)}^{\left(\frac{1}{3}\right)}\right)}^{3} - {\left(\sqrt{{x}^{\left(\frac{1}{3}\right)}} \cdot \sqrt{{x}^{\left(\frac{1}{3}\right)}}\right)}^{3}}{{\left(1 + x\right)}^{\left(\frac{1}{3}\right)} \cdot {\left(1 + x\right)}^{\left(\frac{1}{3}\right)} + \color{blue}{{\left(e^{\sqrt[3]{\frac{\log x}{3}} \cdot \sqrt[3]{\frac{\log x}{3}}}\right)}^{\left(\sqrt[3]{\frac{\log x}{3}}\right)}} \cdot \left({\left(1 + x\right)}^{\left(\frac{1}{3}\right)} + {x}^{\left(\frac{1}{3}\right)}\right)}\]

Runtime

Time bar (total: 1.1m)Debug log

herbie shell --seed '#(1743936871 1855164119 3668777427 1254258049 132811564 1366975197)' 
(FPCore (x)
  :name "NMSE problem 3.3.4"
  :pre (>= x 0)
  (- (pow (+ x 1) (/ 1 3)) (pow x (/ 1 3))))