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摘要: |
设shx,shx是双曲正,余弦函数,用发生函数的方法得到正负相间双曲正,余弦函数方幂与等比序列乘积之和:Σ(-1)kdkshrkx,∑(-1)kdkchrkx和正负相间双曲正,余弦函数方幂与三角函数乘积和∑(-1)kshrkxsinkβ,∑(-1)kshrkxcoskβ. |
关键词: 双曲函数 三角函数 等比函数 形式幂级数 发生函数 |
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Power Sum Alternated with Positive and Negative of Hyperbolic Function |
JI Wan-hui,YANG Chun-yan
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Abstract: |
Let shx and chx be hyperbolic sine function and cosine function,the calculation formula Σ(-1)kdkshrkx,∑(-1)kdkchrkx,which are the product sum of the power alternated with positive and negative of hyperbolic sine function and cosine function and geometrical sequence,as well as teh formula ∑(-1)kshrkxsinkβ,∑(-1)kshrkxcoskβ,which are the product sum of the power alternated with positive and negative of hyperbolic sine function and cosine function and trigonometric function,are obtaained by function-generating method. |
Key words: hyperbolic function trigonometric function geometrical sequence formal power series generating function |