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Math Help - exponent

  1. #1
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    Red face exponent

    Hi,

    I'm doing a home problem with dealing with Exponential and it Functions. I'm suppose to approximate each number by rounding 3 decimal places

    2 ^3/4 is the problem. I came up with 1.681793 but it seemed to be wrong when I check in the back of my book. It came about to be 10.556, but with the answer I came up with am I suppose to move the decimal place foward or backwards to get the exact answer?
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  2. #2
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    Quote Originally Posted by Lydia08 View Post
    Hi,

    I'm doing a home problem with dealing with Exponential and it Functions. I'm suppose to approximate each number by rounding 3 decimal places

    2 ^3/4 is the problem. I came up with 1.681793 but it seemed to be wrong when I check in the back of my book. It came about to be 10.556, but with the answer I came up with am I suppose to move the decimal place foward or backwards to get the exact answer?
    I'd be surprised if your book said that 2^{\frac{3}{4}} = 10.556. Your answer of 1.682 is correct.
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  3. #3
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    Quote Originally Posted by Lydia08 View Post
    Hi,

    I'm doing a home problem with dealing with Exponential and it Functions. I'm suppose to approximate each number by rounding 3 decimal places

    2 ^3/4 is the problem. I came up with 1.681793 but it seemed to be wrong when I check in the back of my book. It came about to be 10.556, but with the answer I came up with am I suppose to move the decimal place foward or backwards to get the exact answer?
    1.682 is the right answer, so I don't know what your book is telling you. What do you mean by "moving the decimal place?"

    -Dan
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