\[b - \left({\left(\cot b\right)}^{a} + \sin^{-1} b\right)\]
Test:
(- b (+ (pow (cotan b) a) (asin b)))
Bits:
128 bits
Bits error versus a
Bits error versus b
Time: 16.2 s
Input Error: 4.0
Output Error: 6.2
Log: ⚲
Profile: 🕒
\({\left(\frac{\sqrt[3]{{b}^2 - {\left({\left(\cot b\right)}^{a} + \sin^{-1} b\right)}^2}}{\sqrt[3]{b + \left({\left(\cot b\right)}^{a} + \sin^{-1} b\right)}}\right)}^3\)
  1. Started with
    \[b - \left({\left(\cot b\right)}^{a} + \sin^{-1} b\right)\]
    4.0
  2. Using strategy rm
    4.0
  3. Applied add-cube-cbrt to get
    \[\color{red}{b - \left({\left(\cot b\right)}^{a} + \sin^{-1} b\right)} \leadsto \color{blue}{{\left(\sqrt[3]{b - \left({\left(\cot b\right)}^{a} + \sin^{-1} b\right)}\right)}^3}\]
    4.1
  4. Using strategy rm
    4.1
  5. Applied flip-- to get
    \[{\left(\sqrt[3]{\color{red}{b - \left({\left(\cot b\right)}^{a} + \sin^{-1} b\right)}}\right)}^3 \leadsto {\left(\sqrt[3]{\color{blue}{\frac{{b}^2 - {\left({\left(\cot b\right)}^{a} + \sin^{-1} b\right)}^2}{b + \left({\left(\cot b\right)}^{a} + \sin^{-1} b\right)}}}\right)}^3\]
    12.8
  6. Applied cbrt-div to get
    \[{\color{red}{\left(\sqrt[3]{\frac{{b}^2 - {\left({\left(\cot b\right)}^{a} + \sin^{-1} b\right)}^2}{b + \left({\left(\cot b\right)}^{a} + \sin^{-1} b\right)}}\right)}}^3 \leadsto {\color{blue}{\left(\frac{\sqrt[3]{{b}^2 - {\left({\left(\cot b\right)}^{a} + \sin^{-1} b\right)}^2}}{\sqrt[3]{b + \left({\left(\cot b\right)}^{a} + \sin^{-1} b\right)}}\right)}}^3\]
    6.2

Original test:


(lambda ((a default) (b default))
  #:name "(- b (+ (pow (cotan b) a) (asin b)))"
  (- b (+ (pow (cotan b) a) (asin b))))