|
In mathematics, a power of two means a number of the form where is an integer, i.e. the result of exponentiation with number two as the base and integer as the exponent. In a context where only integers are considered, is restricted to non-negative values, so we have 1, 2, and 2 multiplied by itself a certain number of times. Because two is the base of the binary numeral system, powers of two are common in computer science. Written in binary, a power of two always has the form 100…000 or 0.00…001, just like a power of ten in the decimal system. ==Expressions and notations== Verbal expressions, mathematical notations, and computer programming expressions using a power operator or function include: : 2 to the ''n'' : 2 to the power of ''n'' : 2 power ''n'' : power(2, ''n'') : pow(2, ''n'') : 2''n'' : 1 << ''n'' : 2 ^ ''n'' : 2 * * ''n'' : 2 () ''n'' : 2 ↑ ''n'' : ''A''(''n'' - 3, 3) + 3 : : : 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Power of two」の詳細全文を読む スポンサード リンク
|