题目内容
若S=(1+
)(1+
)(1+
),则S=____________.
解析:S= = = = = 答案:
·(1-
)(1+
)(1+
)·(1+
)
(1-
)(1+
)(1+
)
(1-
)(1+
)
(1-2-1)
(1-
)-1
(1-
)-1
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题目内容
若S=(1+
)(1+
)(1+
),则S=____________.
解析:S= = = = = 答案:
·(1-
)(1+
)(1+
)·(1+
)
(1-
)(1+
)(1+
)
(1-
)(1+
)
(1-2-1)
(1-
)-1
(1-
)-1