Editing Inverse function (section)

=== Standard inverse functions ===
The following table shows several standard functions and their inverses:
{| class="wikitable" align="center"
|+Inverse arithmetic functions
|-
!scope="col" align="center" | Function {{math|''f''(''x'')}}
!scope="col" align="center" | Inverse {{math|''f''<sup> −1</sup>(''y'')}}
!scope="col" align="center" | Notes
|-
| align="center" | {{math|''x'' [[addition|+]] ''a''}}
| align="center" | {{math|''y'' [[subtraction|−]] ''a''}}
|
|-
| align="center" | {{math|''a'' − ''x''}}
| align="center" | {{math|''a'' − ''y''}}
|
|-
| align="center" | {{math|[[multiplication|''mx'']]}}
| align="center" | {{sfrac|{{mvar|y}}|{{mvar|m}}}}
| {{math|''m'' ≠ 0}}
|-
| align="center" | {{sfrac|1|{{mvar|x}}}} (i.e. {{math|''x''<sup>−1</sup>}})
| align="center" | {{sfrac|1|{{mvar|y}}}} (i.e. {{math|''y''<sup>−1</sup>}})
| {{math|''x'', ''y'' ≠ 0}}
|-
| align="center" | {{math|''x''<sup>''p''</sup>}}
| align="center" | <math>\sqrt[p]y</math> (i.e. {{math|''y''<sup>1/''p''</sup>}})
| integer {{math|''p'' > 0}}; {{math|''x'', ''y'' ≥ 0}} if {{math|p}} is even
|-
| align="center" | {{math|''a''<sup>''x''</sup>}}
| align="center" | {{math|[[logarithm|log]]<sub>''a''</sub> ''y''}}
| {{math|''y'' > 0}} and {{math|''a'' > 0}} and {{math|''a'' ≠ 1}}
|-
| align="center" | {{math|''x''[[e (mathematical constant)|''e'']]<sup>''x''</sup>}}
| align="center" | {{math|[[Lambert W function|W]] (''y'')}}
| {{math|''x'' ≥ −1}} and {{math|''y'' ≥ −1/''e''}}
|-
| align="center" | [[trigonometric function]]s
| align="center" | [[inverse trigonometric function]]s
| various restrictions (see table below)
|-
| align="center" | [[hyperbolic function]]s
| align="center" | [[inverse hyperbolic function]]s
| various restrictions
|}