Mathematics, 18.10.2020 05:01 desmiyoungmoore
Which set of values is a function?
A. 2, -2) (5, 9) (5, -7) (1, 4)
B. (3,4) (4,-3) (7,4) (3, 8)
C. (6,-5) (7, -3) (8, -1) (9, 1)
Answers: 1
Mathematics, 21.06.2019 19:50
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) = .
Answers: 3
Which set of values is a function?
A. 2, -2) (5, 9) (5, -7) (1, 4)
B. (3,4) (4,-3) (7,4...
B. (3,4) (4,-3) (7,4...
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