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anonymous

  • 5 years ago

Electrical wires suspended between two towers form a catenary (see figure) modeled by the equation shown below, where x and y are measured in meters. (see attachment)

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  1. anonymous
    • 5 years ago
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    This is the full question.

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  2. anonymous
    • 5 years ago
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    the length has to be greater than 40 but less than 60 i will try finding an exact value

  3. anonymous
    • 5 years ago
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    its somewhere around 45 i dont know how to solve cosh so im using approximation

  4. anonymous
    • 5 years ago
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    I think cosh is just an expression, because I used microsoft math and it said that the derivative was sinh

  5. anonymous
    • 5 years ago
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    I found it to be 44.956, but the online system says that is wrong. But I think I am close

  6. anonymous
    • 5 years ago
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    I found this for cosh: http://www.ucl.ac.uk/Mathematics/geomath/level2/hyper/diff11.gif

  7. anonymous
    • 5 years ago
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    ive heard of it but i cant operate using it i can work with sin and cos

  8. anonymous
    • 5 years ago
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    \[\int\limits_{-20}^{20}\sqrt(1 + (\sinh(x/20))^2) dx\]

  9. anonymous
    • 5 years ago
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    hello!

  10. amistre64
    • 5 years ago
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    as long as you are using the dervivative of the cosh that should work, plug it into wolframalpha.com to get an exact anwer to that :) int(sqrt(......))dx from a to b

  11. anonymous
    • 5 years ago
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    is this the right equation?

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  12. amistre64
    • 5 years ago
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    if the question is find the length of the wire; than yes; but try it finding only the right side, and then double it

  13. anonymous
    • 5 years ago
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    okay. I tried putting it in wolfram alpha, and it gives me 47.008, and it works. Thanks

  14. amistre64
    • 5 years ago
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    guests can only view ..

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