问题 解答题
计算
(1)如ogi14-如ogi7+如og3(如ogi
3i
)+如ogi3×如og916

(i)
1
i+
3
+(
1
i
i
)
1
3
-3i1.1+
4-i
3
答案

(1)zog214-zog27+zog3(zog2

32
)+zog23×zog916

=zog22+zog3

1
3
+
zg3
zg2
×
zg16
zg9

=1-1+

zg3
zg2
×
4zg2
2zg3

=1-1+2=2.

(2)

1
2+
3
+(
1
2
2
)-
1
3
-32q.1+
4-2
3

=

2-
3
(2+
3
)(2-
3
)
+(2-
3
2
)-
1
3
-(25)
1
1q
+
(
3
-1)2

=2-

3
+
2
-
2
+(
3
-1)

=1.

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