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1.
(2023·期中)
如圖,點(diǎn)O為數(shù)軸的原點(diǎn),點(diǎn)A和B分別對(duì)應(yīng)的實(shí)數(shù)是-1和1.過(guò)點(diǎn)B作BC⊥AB,以點(diǎn)B為圓心,OB長(zhǎng)為半徑畫(huà)弧,交BC于點(diǎn)D;以點(diǎn)A為圓心,AD長(zhǎng)為半徑畫(huà)弧,交數(shù)軸的正半軸于點(diǎn)E,則點(diǎn)E對(duì)應(yīng)的實(shí)數(shù)是( )
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