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[e^u + e^(-u)]^ 2 = ?

2007-03-11 09:59:00 · 1 answers · asked by RogerDodger 1 in Science & Mathematics ➔ Other - Science

1 answers

Since cosh(u) = (e^u + e^(-u))/2 it's
4*cosh²(u)

HTH ☺

Doug

2007-03-11 11:15:36 · answer #1 · answered by doug_donaghue 7 · 1⤊ 0⤋

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