3.(1)求復(fù)數(shù)z=
在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)所在的象限.
(2)設(shè)z=log
2(1+m)-ilo
(5-m)(m∈R),如果z在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)在直線x-y=1上,求復(fù)數(shù)z在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)所在的象限.
(3)在復(fù)平面內(nèi),復(fù)數(shù)6+5i,-2+3i所對(duì)應(yīng)的點(diǎn)分別為A,B,若C為線段AB的中點(diǎn),求點(diǎn)C所對(duì)應(yīng)的復(fù)數(shù).