问题 填空题
化简log2(1+
2
+
3
)+log2(1+
2
-
3
)
=______.
答案

log2(1+

2
+
3
)+log2(1+
2
-
3
)

=log2(1+

2
+
3
) (1+
2
-
3
)

=log22

2

=

3
2

故答案为

3
2

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