Page 1 of 4
QUESTIN 1
(16MAR
Consider the arithmetic series 3 + 7+11+ 15 +19+23+27+ ......
Mathematics, 05.03.2021 23:30 iheartlink1
Page 1 of 4
QUESTIN 1
(16MAR
Consider the arithmetic series 3 + 7+11+ 15 +19+23+27+ ...and answer the q
which follow.
a) (i) T1=
Si=
What does S1 mean in maths arithmetic sequence
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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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30 ! the graph shows the number of siblings different students have. select from the drop-down menus to correctly complete the statement.
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