Mathematics, 12.07.2021 20:40 adellbakarralus232
As ofβ 2011, the following are the ages at which aβ country's presidents were inaugurated.
Construct a grouped frequency distribution for the data. Use 41β - 45 for the first class and use the same width for each subsequent class.
Age: 41-45, 46-50, 51-55, 56-60, 61-65, 66-70
What are all these ages frequency's?
Answers: 1
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Prove (a) cosh2(x) β sinh2(x) = 1 and (b) 1 β tanh 2(x) = sech 2(x). solution (a) cosh2(x) β sinh2(x) = ex + eβx 2 2 β 2 = e2x + 2 + eβ2x 4 β = 4 = . (b) we start with the identity proved in part (a): cosh2(x) β sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 β sinh2(x) cosh2(x) = 1 or 1 β tanh 2(x) = .
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As ofβ 2011, the following are the ages at which aβ country's presidents were inaugurated.
Construc...
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