Question: Use the method of Problem 34 to find the terms through x4 in the series for sech x? Discuss.

Use the method of Problem 34 to find the terms through x4 in the series for sech x? Discuss.

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Sech x 1 cosh x a 0 a 1 x a 2 x 2 So 1 cosh xa 0 a 1 x a 2 x 2 Or 1 1 x 2 2 x 4 ... View full answer

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