Average Error: 30.1 → 2.6
Time: 20.3s
Precision: 64
Internal precision: 1408
\[{\left(x + 1\right)}^{\left(\frac{1}{3}\right)} - {x}^{\left(\frac{1}{3}\right)}\]
\[\frac{1}{\left({x}^{\left(\frac{1}{3}\right)} + \sqrt[3]{x + 1}\right) \cdot \sqrt[3]{x + 1} + {\left({x}^{\left(\frac{1}{3}\right)}\right)}^2}\]

Error

Bits error versus x

Derivation

  1. Initial program 30.1

    \[{\left(x + 1\right)}^{\left(\frac{1}{3}\right)} - {x}^{\left(\frac{1}{3}\right)}\]
  2. Using strategy rm
  3. Applied add-exp-log 30.3

    \[\leadsto {\color{blue}{\left(e^{\log \left(x + 1\right)}\right)}}^{\left(\frac{1}{3}\right)} - {x}^{\left(\frac{1}{3}\right)}\]
  4. Applied pow-exp 30.3

    \[\leadsto \color{blue}{e^{\log \left(x + 1\right) \cdot \frac{1}{3}}} - {x}^{\left(\frac{1}{3}\right)}\]
  5. Applied simplify 30.0

    \[\leadsto e^{\color{blue}{\frac{\log \left(x + 1\right)}{3}}} - {x}^{\left(\frac{1}{3}\right)}\]
  6. Using strategy rm
  7. Applied flip3-- 30.0

    \[\leadsto \color{blue}{\frac{{\left(e^{\frac{\log \left(x + 1\right)}{3}}\right)}^{3} - {\left({x}^{\left(\frac{1}{3}\right)}\right)}^{3}}{{\left(e^{\frac{\log \left(x + 1\right)}{3}}\right)}^2 + \left({\left({x}^{\left(\frac{1}{3}\right)}\right)}^2 + e^{\frac{\log \left(x + 1\right)}{3}} \cdot {x}^{\left(\frac{1}{3}\right)}\right)}}\]
  8. Applied simplify 29.8

    \[\leadsto \frac{\color{blue}{\left(x + 1\right) - {\left({x}^{\left(\frac{1}{3}\right)}\right)}^3}}{{\left(e^{\frac{\log \left(x + 1\right)}{3}}\right)}^2 + \left({\left({x}^{\left(\frac{1}{3}\right)}\right)}^2 + e^{\frac{\log \left(x + 1\right)}{3}} \cdot {x}^{\left(\frac{1}{3}\right)}\right)}\]
  9. Applied simplify 29.8

    \[\leadsto \frac{\left(x + 1\right) - {\left({x}^{\left(\frac{1}{3}\right)}\right)}^3}{\color{blue}{\left({x}^{\left(\frac{1}{3}\right)} + \sqrt[3]{x + 1}\right) \cdot \sqrt[3]{x + 1} + {x}^{\left(\frac{1}{3}\right)} \cdot {x}^{\left(\frac{1}{3}\right)}}}\]
  10. Applied taylor 29.8

    \[\leadsto \frac{\left(x + 1\right) - {\left({x}^{\frac{1}{3}}\right)}^3}{\left({x}^{\left(\frac{1}{3}\right)} + \sqrt[3]{x + 1}\right) \cdot \sqrt[3]{x + 1} + {x}^{\left(\frac{1}{3}\right)} \cdot {x}^{\left(\frac{1}{3}\right)}}\]
  11. Taylor expanded around 0 29.8

    \[\leadsto \frac{\left(x + 1\right) - {\color{blue}{\left({x}^{\frac{1}{3}}\right)}}^3}{\left({x}^{\left(\frac{1}{3}\right)} + \sqrt[3]{x + 1}\right) \cdot \sqrt[3]{x + 1} + {x}^{\left(\frac{1}{3}\right)} \cdot {x}^{\left(\frac{1}{3}\right)}}\]
  12. Applied simplify 2.6

    \[\leadsto \color{blue}{\frac{1}{{x}^{\left(\frac{1}{3}\right)} \cdot {x}^{\left(\frac{1}{3}\right)} + \sqrt[3]{x + 1} \cdot \left({x}^{\left(\frac{1}{3}\right)} + \sqrt[3]{x + 1}\right)}}\]
  13. Applied simplify 2.6

    \[\leadsto \frac{1}{\color{blue}{\left({x}^{\left(\frac{1}{3}\right)} + \sqrt[3]{x + 1}\right) \cdot \sqrt[3]{x + 1} + {\left({x}^{\left(\frac{1}{3}\right)}\right)}^2}}\]
  14. Removed slow pow expressions

Runtime

Time bar (total: 20.3s) Debug log

Please include this information when filing a bug report:

herbie shell --seed '#(2277612311 2645429965 1090895633 2857793080 2144184008 3989768357)'
(FPCore (x)
  :name "2cbrt (problem 3.3.4)"
  (- (pow (+ x 1) (/ 1 3)) (pow x (/ 1 3))))