Area Sector of Hyperbola: Arcsinh & Arcosh Explained w/ Example

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SUMMARY

The discussion focuses on calculating the area sector of a unit hyperbola defined by the equation x² - y² = 1 using the inverse hyperbolic functions arcsinh and arcosh. The user seeks a numerical example and graphical representation to illustrate how these functions can compute the area. Key formulas include arcsinh(x) = ln(x + √(x² + 1)) and the relationships between area, sinh(a), and cosh(a) as they relate to points on the hyperbola. The discussion references a Wikipedia page for definitions and further explanations.

PREREQUISITES
  • Understanding of hyperbolic functions, specifically sinh and cosh.
  • Familiarity with inverse hyperbolic functions, particularly arcsinh and arcosh.
  • Basic knowledge of calculus, particularly area under curves.
  • Ability to interpret and create graphs of mathematical functions.
NEXT STEPS
  • Study the derivation and properties of inverse hyperbolic functions.
  • Learn how to compute areas under hyperbolic curves using integration techniques.
  • Explore graphical representations of hyperbolic functions and their inverses.
  • Investigate applications of hyperbolic functions in real-world scenarios, such as physics and engineering.
USEFUL FOR

Mathematicians, physics students, and anyone interested in advanced calculus and hyperbolic functions will benefit from this discussion, particularly those looking to deepen their understanding of area calculations involving hyperbolas.

morrobay
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Could someone explain with a numerical example showing how the inverse hyperbolic
functions, arcsinh and arcosh in log form ,can compute the area sector of a unit hyperbola
x^2-y^2=1
If possible with a graph, thanks
 
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This picture's worth a thousand area calculations of a sector...
 

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benorin said:
This picture's worth a thousand area calculations of a sector...
Hello that picture from wikipedia is on the hyperbolic functions, sinhx =e^x-e^-x/2
coshx=e^x+e^-x/2
If you substitute a = area for x in the equations above then you can obtain the points on the hyperbola with the sinh(a) as the y cooridinate and cosh(a) as the x cooridinate.
As the ray in picture, that passes through the point cosh(a),sinh(a), sweeps down you can see how the values of area, sinhx,coshx change.
My question is on the inverse hyperbolic functions , arcsinhx= ln(x+sqrt(x^2+1)
See Wikipedia for definitions. Then from the first two lines of that page ,wiki inv hyp func.
continue to 'area sector of unit hyperbola'
Now this is where my question is: what values of x would be used for arcsinh x and arccosh x
to obtain that area sector
 
Last edited:
Reference http://kr.cs.ait.ac.th/~radok/math/mat6/calc31.htm" under the section headed "3.8.4 Further Analogies".
 
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