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OpenStudy (anonymous):
Prove the following equality sinh ^-1 x = ln (x + radical (x^2 + 1)) Prove the following equality sinh ^-1 x = ln (x + radical (x^2 + 1)) @Mathematics
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OpenStudy (zarkon):
try differentiating both sides
OpenStudy (stacey):
A very direct method for showing this is found at http://www.youtube.com/watch?v=8-472M6J0HY&feature=related
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