Question: This is a [cops-and-robbers](/questions/tagged/cops-and-robbers "show questions tagged 'cops-and-robbers'") puzzle, the cops' thread can be found [here.](https://codegolf.stackexchange.com/questions/107012/hidden-inversions-cops-thread)

Your task will be to find an anagram of the provided programs in the cops' thread that performs its left inverse.

Once you crack an answer post the solution as an answer below and notify the original answerer.

You will be scored on the number of programs you are the first to crack.

Answer: 
Javascript, 21 bytes, [Arnauld](https://codegolf.stackexchange.com/a/107022/47066)
==================================================================================

**Original**

```
b=>Math.pow(b,torc=3)

```

**Crack**

```
o=>Math.cbrt(o,pbw=3)

```

Returns the cube root.
J, 29 bytes, [Zgarb](https://codegolf.stackexchange.com/a/107108/6710)
======================================================================

Original
--------

```
5#.[:,(3 5&#:(-$]-)7)#.inv"0]

```

Crack
-----

```
[:(](07-5)"3 #.-:&#$,)5#.inv]

```

[Try it online!](https://tio.run/nexus/j#JcqxCoAgEADQ3a84PJETVAwR4aAvEadIa6mt3zey7Q1vNFgZEvrCliIkjUxOVWeyQX9ejwxV9K8Upkohu2RkBPSONSpr0kxViH07bmiw5F99eowX)

Another crack equivalent is

```
[:((3 ]7-5)#.-:&#$,)5#.inv"0]

```

Explanation
-----------

```
[:(](07-5)"3 #.-:&#$,)5#.inv]  Input: integer n
                            ]  Get n
                      5        The constant 5
                       #.inv   Get the digits of n in base 5
[:(                  )         Operate on those digits D
                    ,            Flatten D (does nothing since it is already a list)
                  #              Get the length of D
               -:&               Halve it
                   $             Reshape D to half its length (only the base 2 digits)
    (07-5)"3                     The constant 2 with rank 3
             #.                  Convert the front-half of D to a decimal from base 2
   ]                             Return the right result

```