設(shè)復(fù)數(shù)z=+. 問(wèn)當(dāng)x為何實(shí)數(shù)時(shí).z是⑴實(shí)數(shù). ⑵ 虛數(shù). ⑶ 純虛數(shù). ⑷ z在復(fù)平面上對(duì)應(yīng)的點(diǎn)在實(shí)軸上方.⑸|z|=1 查看更多

 

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設(shè)復(fù)數(shù)z=2logax+(loga2x-1)i(a>0,a≠1),問(wèn)當(dāng)x為何實(shí)數(shù)時(shí),(1)z是實(shí)數(shù)?(2)z是虛數(shù)?(3)z是純虛數(shù)? (4)z在復(fù)平面上對(duì)應(yīng)的點(diǎn)位于實(shí)軸上方?(5)|z|=1?

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設(shè)復(fù)數(shù)z=2logax+(loga2x-1)i(a>0,a≠1),問(wèn)當(dāng)x為何實(shí)數(shù)時(shí),(1)z是實(shí)數(shù)?(2)z是虛數(shù)?(3)z是純虛數(shù)?(4)z在復(fù)平面上對(duì)應(yīng)的點(diǎn)位于實(shí)軸上方?(5)|z|=1?

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設(shè)復(fù)數(shù)z=2logax+(loga2x-1)i(a>0,a≠1),問(wèn)當(dāng)x為何實(shí)數(shù)時(shí),(1)z是實(shí)數(shù)?(2)z是虛數(shù)?(3)z是純虛數(shù)?(4)z在復(fù)平面上對(duì)應(yīng)的點(diǎn)位于實(shí)軸上方?(5)|z|=1?

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