Mathematics, 26.09.2020 01:01 kenariachrista
Pretend someone is on a very strict diet to qualify for a sporting event. That person couldn't resist eating a 200 calorie cookie for lunch, and is now probably going to be 200 calories over the daily limit of calories by the end of the day. What might the person need to do to be within the limit by the end of the day?
Answers: 2
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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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Pretend someone is on a very strict diet to qualify for a sporting event. That person couldn't resis...
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