Mathematics, 20.11.2020 21:20 kenleighbrooke67
A machine can make 14,400 nails in 6 hours? A second machine can make twice as many
nails per hour. What is the constant of proportionality between the number of nails and the
number of minutes for the second machine?
Answers: 1
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Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .
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A machine can make 14,400 nails in 6 hours? A second machine can make twice as many
nails per hour....
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