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  2. Exponentiation - Wikipedia

    en.wikipedia.org/wiki/Exponentiation

    Here, 243 is the 5th power of 3, or 3 raised to the 5th power. The word "raised" is usually omitted, ... Every power of one equals: 1 n = 1. Powers of zero

  3. Power of two - Wikipedia

    en.wikipedia.org/wiki/Power_of_two

    The first 3 powers of 2 with all but last digit odd is 2 4 = 16, 2 5 = 32 and 2 9 = 512. The next such power of 2 of form 2 n should have n of at least 6 digits. The only powers of 2 with all digits distinct are 2 0 = 1 to 2 15 = 32 768 , 2 20 = 1 048 576 and 2 29 = 536 870 912 .

  4. Sums of powers - Wikipedia

    en.wikipedia.org/wiki/Sums_of_powers

    The Riemann zeta function is the sum of reciprocals of the positive integers each raised to the power ... 1 1 + 2 1 = 3 1. The sums of three cubes cannot equal 4 or ...

  5. Fourth power - Wikipedia

    en.wikipedia.org/wiki/Fourth_power

    n 4 = n × n × n × n. Fourth powers are also formed by multiplying a number by its cube. Furthermore, they are squares of squares. Some people refer to n 4 as n tesseracted, hypercubed, zenzizenzic, biquadrate or supercubed instead of “to the power of 4”. The sequence of fourth powers of integers, known as biquadrates or tesseractic ...

  6. Tetration - Wikipedia

    en.wikipedia.org/wiki/Tetration

    For example, 2 tetrated to 4 (or the fourth tetration of 2) is = = = =. It is the next hyperoperation after exponentiation , but before pentation . The word was coined by Reuben Louis Goodstein from tetra- (four) and iteration .

  7. Exponential function - Wikipedia

    en.wikipedia.org/wiki/Exponential_function

    Exponential functions with bases 2 and 1/2 The base of an exponential function is the base of the exponentiation that appears in it when written as ⁠ x → a b x {\displaystyle x\to ab^{x}} ⁠ , namely ⁠ b {\displaystyle b} ⁠ . [ 6 ]

  8. Waring's problem - Wikipedia

    en.wikipedia.org/wiki/Waring's_problem

    In number theory, Waring's problem asks whether each natural number k has an associated positive integer s such that every natural number is the sum of at most s natural numbers raised to the power k. For example, every natural number is the sum of at most 4 squares, 9 cubes, or 19 fourth powers.

  9. Proof of Fermat's Last Theorem for specific exponents

    en.wikipedia.org/wiki/Proof_of_Fermat's_Last...

    By the lemma above, since s is odd and its cube is equal to a number of the form 3w 2 + v 2, it too can be expressed in terms of smaller coprime numbers, e and f. s = e 2 + 3f 2. A short calculation shows that v = e(e 2 − 9f 2) w = 3f(e 2 − f 2) Thus, e is odd and f is even, because v is odd. The expression for 18w then becomes