• 2021-04-14
    函数的傅里叶变换存在的充分条件(并非必要条件)是在无限区间内绝对可积,即fa962e5068d4caaa422dedc496daf13e.pngfa962e5068d4caaa422dedc496daf13e.png47b5eeb5ffbcaeea5425675da43422f1.png