https://assets.asklib.com/psource/2015102616370673553.jpg 的傅立叶级数展开式中,系数a 3 的值是:()

A . ['['πB . 1/10π(-1+)https://assets.asklib.com/psource/2015102616370717083.jpg C . 1/10π(1+https://assets.asklib.com/psource/2015102616370717083.jpg )D . 1/10π(1-https://assets.asklib.com/psource/2015102616370717083.jpg )

时间:2022-09-22 15:22:26 所属题库:高等数学题库

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