有關bi1的精選大全

若i(bi+1)是純虛數,i是虛數單位,則實數b=
問題詳情:若i(bi+1)是純虛數,i是虛數單位,則實數b=______.【回答】0.【考點】複數的基本概念.【分析】由i(bi+1)=﹣b+i,又i(bi+1)是純虛數,即可得到實部等於0,則b可求.【解答】解:i(bi+1)=﹣b+i,又i(bi+1)是純虛數,則﹣b=0,即b=0.故*為:0.【點評】本題...
用動詞的適當形式填空。 A:Peter,whydoyoulooksotired? B:I(1)        ...
問題詳情:用動詞的適當形式填空。 A:Peter,whydoyoulooksotired? B:I(1)            (stay)onlinelastnight. A:Maybeyouwereonlinetoolong.You’dbetter(2)            (have)agoodrest....
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