Changes between Initial Version and Version 1 of Ticket #19797, comment 14
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 12/30/15 09:56:09 (5 years ago)
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Ticket #19797, comment 14
initial v1 8 8 e^(4*I*x) + e^(4*I*x) 9 9 }}} 10 (for real `x`)is not manifestly real, since there is no guarantee that the imaginary parts of the two terms will ''exactly'' cancel out.10 is not manifestly real, since there is no guarantee that the imaginary parts of the two terms will ''exactly'' cancel out.