anonymous
  • anonymous
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)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
This is the full question.
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anonymous
  • anonymous
the length has to be greater than 40 but less than 60 i will try finding an exact value
anonymous
  • anonymous
its somewhere around 45 i dont know how to solve cosh so im using approximation

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anonymous
  • anonymous
I think cosh is just an expression, because I used microsoft math and it said that the derivative was sinh
anonymous
  • anonymous
I found it to be 44.956, but the online system says that is wrong. But I think I am close
anonymous
  • anonymous
I found this for cosh: http://www.ucl.ac.uk/Mathematics/geomath/level2/hyper/diff11.gif
anonymous
  • anonymous
ive heard of it but i cant operate using it i can work with sin and cos
anonymous
  • anonymous
\[\int\limits_{-20}^{20}\sqrt(1 + (\sinh(x/20))^2) dx\]
anonymous
  • anonymous
hello!
amistre64
  • amistre64
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
anonymous
  • anonymous
is this the right equation?
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amistre64
  • amistre64
if the question is find the length of the wire; than yes; but try it finding only the right side, and then double it
anonymous
  • anonymous
okay. I tried putting it in wolfram alpha, and it gives me 47.008, and it works. Thanks
amistre64
  • amistre64
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