• 2021-04-14 问题

    “Sumsin(kx)/k”与“Sumsin(kx)/(k1)”的函数图像相同

    “Sumsin(kx)/k”与“Sumsin(kx)/(k1)”的函数图像相同

  • 2021-04-14 问题

    “Sumsin(k+x)/k”与“Sumsin(k+x)/(k+1)”的函数图像相同

    “Sumsin(k+x)/k”与“Sumsin(k+x)/(k+1)”的函数图像相同

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