若2-a分之根號a+1有意義,則a的取值范圍是
若2-a分之根號a+1有意義,則a的取值范圍是
數(shù)學(xué)人氣：473 ℃時(shí)間：2020-05-21 09:32:53
優(yōu)質(zhì)解答
a的取值范圍是a大于等于-1且不等于2
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