若a与2b互为负倒数,-C与B/2互为相反数,M与N互为相反数,试求2AB-2C+D+M/N
人气:492 ℃ 时间:2019-10-11 17:02:36
解答
根据条件可知:
a=1/(2b)
c=b/2
m=-n
于是有:
2ab=1
2c=b
m/n=-1
则原式等于=1-b+d-1
=d-b
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