Average Error: 29.6 → 29.4
Time: 9.6s
Precision: 64
Internal precision: 1408
\[{\left(x + 1\right)}^{\left(\frac{1}{3}\right)} - {x}^{\left(\frac{1}{3}\right)}\]
\[{\left(\sqrt[3]{\sqrt[3]{x + 1}}\right)}^3 - {\left(\sqrt[3]{{x}^{\left(\frac{1}{3}\right)}}\right)}^3\]

Error

Bits error versus x

Derivation

  1. Initial program 29.6

    \[{\left(x + 1\right)}^{\left(\frac{1}{3}\right)} - {x}^{\left(\frac{1}{3}\right)}\]
  2. Using strategy rm
  3. Applied add-exp-log 29.9

    \[\leadsto {\color{blue}{\left(e^{\log \left(x + 1\right)}\right)}}^{\left(\frac{1}{3}\right)} - {x}^{\left(\frac{1}{3}\right)}\]
  4. Applied pow-exp 29.8

    \[\leadsto \color{blue}{e^{\log \left(x + 1\right) \cdot \frac{1}{3}}} - {x}^{\left(\frac{1}{3}\right)}\]
  5. Applied simplify 29.5

    \[\leadsto e^{\color{blue}{\frac{\log \left(1 + x\right)}{3}}} - {x}^{\left(\frac{1}{3}\right)}\]
  6. Using strategy rm
  7. Applied add-cube-cbrt 29.6

    \[\leadsto \color{blue}{{\left(\sqrt[3]{e^{\frac{\log \left(1 + x\right)}{3}}}\right)}^3} - {x}^{\left(\frac{1}{3}\right)}\]
  8. Applied simplify 29.4

    \[\leadsto {\color{blue}{\left(\sqrt[3]{\sqrt[3]{x + 1}}\right)}}^3 - {x}^{\left(\frac{1}{3}\right)}\]
  9. Using strategy rm
  10. Applied add-cube-cbrt 29.4

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

Runtime

Time bar (total: 9.6s) Debug logProfile

Please include this information when filing a bug report:

herbie shell --seed '#(1065033997 2389885643 4100569014 2620012693 26800780 3144211646)'
(FPCore (x)
  :name "2cbrt (problem 3.3.4)"
  (- (pow (+ x 1) (/ 1 3)) (pow x (/ 1 3))))