已知实数a.b满足a >=0,b >=0,a -b +1>=0,则z =a +b.的取值范围是多少
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![已知实数a.b满足a >=0,b >=0,a -b +1>=0,则z =a +b.的取值范围是多少](/uploads/image/z/11575361-65-1.jpg?t=%E5%B7%B2%E7%9F%A5%E5%AE%9E%E6%95%B0a.b%E6%BB%A1%E8%B6%B3a+%EF%BC%9E%EF%BC%9D0%2Cb+%EF%BC%9E%EF%BC%9D0%2Ca+-b+%2B1%EF%BC%9E%EF%BC%9D0%2C%E5%88%99z+%3Da+%2Bb.%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%98%AF%E5%A4%9A%E5%B0%91)
已知实数a.b满足a >=0,b >=0,a -b +1>=0,则z =a +b.的取值范围是多少
已知实数a.b满足a >=0,b >=0,a -b +1>=0,则z =a +b.的取值范围是多少
已知实数a.b满足a >=0,b >=0,a -b +1>=0,则z =a +b.的取值范围是多少
a - b ≥ -1
a ≥ b-1
所以当a取最小值0的时候 b最小值为1 所以b的实际取值范围是 b≥1
所以z=a+b 的取值范围 是 z ≥1
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