unknown
(particularly US) Penultimate, one before the end of a series, placed immediately before the end in a sequence.
A surname.
US standard spelling of honoured.
(algebra) A variable (usually x, y or z) whose value is to be found. / Any thing, place, or situation about which nothing is known; an unknown fact or piece of information.
方程式を解くには、両辺が等しくなるまで未知数にさまざまな値を代入してください。
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DiQt
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