• 2022-06-19
    信号[img=134x27]1803243d79cc513.png[/img]的傅里叶变换为( )。
    A: [img=50x46]1803243d82f6aac.png[/img]
    B: [img=50x46]1803243d8bd6b82.png[/img]
    C: [img=50x46]1803243d948b909.png[/img]
    D: [img=50x46]1803243d9d0d684.png[/img]
  • D

    内容

    • 0

      信号[img=120x27]1803bf944400483.png[/img]的傅里叶变换等于 A: [img=50x46]1803bf944c34f12.png[/img] B: [img=50x47]1803bf94543fcab.png[/img] C: [img=42x47]1803bf945c645e8.png[/img] D: [img=117x46]1803bf946501b15.png[/img]

    • 1

      ‍信号[img=120x27]1802d523d140896.png[/img]的傅里叶变换等于‏ A: [img=50x46]1802d523d995de2.png[/img] B: [img=50x47]1802d523e146a9c.png[/img] C: [img=42x47]1802d523ea254f0.png[/img] D: [img=117x46]1802d523f33e5ac.png[/img]

    • 2

      信号[img=120x27]1803623a58632b2.png[/img]的傅里叶变换等于 A: [img=117x46]1803623a60d3ad6.png[/img] B: [img=42x47]1803623a69f3bc3.png[/img] C: [img=50x47]1803623a725a716.png[/img] D: [img=50x46]1803623a7a71721.png[/img]

    • 3

      信号[img=120x27]1803718889c4712.png[/img]的傅里叶变换等于 A: [img=50x46]18037188927c091.png[/img] B: [img=50x47]180371889b7d313.png[/img] C: [img=42x47]18037188a3ef4a8.png[/img] D: [img=117x46]18037188ac49358.png[/img]

    • 4

      信号[img=120x27]18038c02c0e5ee4.png[/img]的傅里叶变换等于 A: [img=50x46]18038c02c8f39c1.png[/img] B: [img=50x47]18038c02d10b5c1.png[/img] C: [img=42x47]18038c02da46731.png[/img] D: [img=117x46]18038c02e2cf074.png[/img]