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Suppose sinh x = 3/4. Using the double-argument rule, sinh 2x is what?
A9/8
B15/8
C25/16
D3/2
Answer & Solution
Correct answer: B. 15/8
With cosh x = 5/4, sinh 2x = 2 (3/4)(5/4) = 30/16 = 15/8.
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