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由x>2m+1,x>-m-3的解集為x>2 可得2=2m+1>-m-3或2=-m-3>2m+1或2=-m-3=2m+1 當2=2m+1>-m-3時解之得m=1/2 當2=-m-3>2m+1時,解之得m=-5 當2=-m-3=2m+1時,解之得無解 所以m=1/2或m=-5
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