1除以2乘4加上1除以4乘6加到1除以2006乘2008

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1除以2乘4加上1除以4乘6加到1除以2006乘2008
1除以2乘4加上1除以4乘6加到1除以2006乘2008

1除以2乘4加上1除以4乘6加到1除以2006乘2008
1÷2×4+1÷4×6+1÷2006×2008
=2+(3/2)+(2008/2006)
=2+(3/2)+(1004/1003)
=9029/2006.

1除以2乘4加上1除以4乘6加到1除以2006乘2008
=1/2×(1/2-1/4)+1/2×(1/4-1/6)+……+1/2×(1/2006-1/2008)
=1/2×(1/2-1/4+1/4-1/6+……+1/2006-1/2008)
=1/2×(1/2-1/2008)
=1/2×(1004/2008-1/2008)
=1/2×1003/2008
=1003/4016

=1/2×(1/2-1/4)+1/2×(1/4-1/6)+……+1/2×(1/2006-1/2008)
=1/2×(1/2-1/4+1/4-1/6+……+1/2006-1/2008)
=1/2×(1/2-1/2008)
=1/2×(1004/2008-1/2008)
=1/2×1003/2008
=1003/4016