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anonymous

  • 5 years ago

how do u raise a fraction to a power

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  1. anonymous
    • 5 years ago
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    \[({a \over b})^{n} = {a^n \over b^n}\]

  2. anonymous
    • 5 years ago
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    any chance u could put a fractin in im really confused with this sort of maths thanks

  3. anonymous
    • 5 years ago
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    it says, if you want to raise any fration a/b (a symbolizing _any_ numerator and b symbolizing _any_ denominator) to the n-th power (n can be _any_ number - or even other expression), you get a fraction again, where you just raise the numerator by the desired exponent and the denomenator by the same desired exponent. (hope that helped - apologies for my english) Example 1: \[({1 \over 4}) ^2 = {1^2 \over 4^2} = {1 \over 16}\] Example2: \[({5 \over 4})^3 = {5^3 \over 4^3} = {125 \over 64}\]

  4. anonymous
    • 5 years ago
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    Maybe this example helps: \[({3 \over 7})^3 = {3 \over 7} \times {3 \over 7} \times {3 \over 7} = {{3\times3\times3} \over {7\times7\times7}} = {3^3 \over 7^3} = {27 \over 343}\]

  5. anonymous
    • 5 years ago
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    for the example above how would you write this as an integer

  6. myininaya
    • 5 years ago
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    you can't

  7. myininaya
    • 5 years ago
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    unless you round

  8. myininaya
    • 5 years ago
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    an integer is an element of the set {...,-3,-2,-1,0,1,2,3,...}

  9. anonymous
    • 5 years ago
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    i think i have got muddled i need to know how to raise 1/27 to the power of 3

  10. myininaya
    • 5 years ago
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    (1/27)^3=1^3/27^3=1/(27*27*27)

  11. anonymous
    • 5 years ago
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    so the integer is 1

  12. myininaya
    • 5 years ago
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    no it is a rational number not an integer

  13. myininaya
    • 5 years ago
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    it is 1/(27*27*27)

  14. myininaya
    • 5 years ago
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    you can find the denominator's product by using a calculator

  15. anonymous
    • 5 years ago
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    how do u get an integer is this done by x the 27 3 times

  16. myininaya
    • 5 years ago
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    i have to leave this fraction cannot be written as an integer

  17. anonymous
    • 5 years ago
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    ok thanks four your help

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