| X with circumflex | |
|---|---|
| X̂x̂ | |
| Usage | |
| Type | alphabetic |
| Language of origin | Aleut language, Haida language |
| Sound values | [χ] |
| In Unicode | U+0058 + U+0302, U+0078 + U+0302 |
| History | |
| Development |
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| Other | |
| This article contains phonetic transcriptions in the International Phonetic Alphabet (IPA). For an introductory guide on IPA symbols, see Help:IPA. For the distinction between [ ], / / and ⟨ ⟩, see IPA § Brackets and transcription delimiters. | |
X̂ is the Latin letter X with a circumflex. The letter is used in the modern orthography of the Aleut language[1] and in the current Alaska Native Language Center alphabet of the Haida language.[2] In both cases, it represents the sound [χ].
In mathematics, x̂ often refers to the unit vector in the +X direction. In statistics, it can also represent the predicted value for x, consistent with the hat notation.[3]
| Preview | X | x | ̂ | |||
|---|---|---|---|---|---|---|
| Unicode name | LATIN CAPITAL LETTER X | LATIN SMALL LETTER X | COMBINING CIRCUMFLEX | |||
| Encodings | decimal | hex | dec | hex | dec | hex |
| Unicode | 88 | U+0058 | 120 | U+0078 | 770 | U+0302 |
| UTF-8 | 88 | 58 | 120 | 78 | 204 130 | CC 82 |
| Numeric character reference | X |
X |
x |
x |
̂ |
̂ |
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