Prove the identity and find f(x)
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7. (i) Prove that
cosh 2 2 sinh2 + 1
(ii) A chain hangs in a shape called a catenary, the equation of which is
f(x) = a cosh ( / a)
Determine the value of x when f(x) = 48 and a = 35.
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Please find the solution attached.
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7. (i) Prove that
cosh 2 2 sinh2 + 1
Solution:
We know that cosh(x + y) = cosh(x) cosh(y) + sinh(x) sinh(y)
Let ...
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