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
Mathematics, 21.06.2019 20:30
Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?
Answers: 1
Mathematics, 21.06.2019 23:30
Which of these angles are complementary? a. 45o and 45o b. 63o and 117o c. 45o and 135o d. 90o and 45o
Answers: 1
Mathematics, 21.06.2019 23:30
Can someone me with my math problem pls my teacher is on my back about this
Answers: 2
In an ap . a= 10 , d=3, n= 5 what is the nth term ?...
Mathematics, 26.03.2021 01:50
English, 26.03.2021 01:50
Mathematics, 26.03.2021 01:50
Chemistry, 26.03.2021 01:50
Physics, 26.03.2021 01:50
Mathematics, 26.03.2021 01:50
Social Studies, 26.03.2021 01:50
Mathematics, 26.03.2021 01:50
Mathematics, 26.03.2021 01:50