=1-1/2+1-1/3+……1-1/2006
=2007-(1+1/2+1/3+……1/2006)
=2007-(ln2006-γ)
≈2007-7.603897968521880840282817113051-0.57721566490153286060651209
≈1998,8183879863021289979668922264
=1-1/2+1-1/3+……1-1/2006
=2007-(1+1/2+1/3+……1/2006)
=2007-(ln2006-γ)
≈2007-7.603897968521880840282817113051-0.57721566490153286060651209
≈1998,8183879863021289979668922264