Average Error: 0.5 → 0.3
Time: 7.6s
Precision: 64
Internal Precision: 128
\[\sqrt{x - 1} \cdot \sqrt{x}\]
↓
\[\frac{\frac{-1}{8}}{x} + \left(x + \frac{-1}{2}\right)\]

Error

Bits error versus x

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.5

    \[\sqrt{x - 1} \cdot \sqrt{x}\]

  2. Initial simplification0.5

    \[\leadsto \sqrt{x + -1} \cdot \sqrt{x}\]

  3. Taylor expanded around inf 0.3

    \[\leadsto \color{blue}{x - \left(\frac{1}{8} \cdot \frac{1}{x} + \frac{1}{2}\right)}\]

  4. Simplified0.3

    \[\leadsto \color{blue}{\frac{\frac{-1}{8}}{x} + \left(x + \frac{-1}{2}\right)}\]

  5. Final simplification0.3

    \[\leadsto \frac{\frac{-1}{8}}{x} + \left(x + \frac{-1}{2}\right)\]

Runtime

Time bar (total: 7.6s)Debug logProfile

herbie shell --seed 2018346 
(FPCore (x)
  :name "sqrt times"
  (* (sqrt (- x 1)) (sqrt x)))