For x4, use a trigonometric identity. For x5, use the Fourier transform of a sinc function and the shift property. Note that the shift property applies to t and not to 3t.

94 4 - For x4, use a trigonometric identity. For x5, use the Fourier transform of a sinc function and the shift property. Note that the shift property applies to t and not to 3t.

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images - For x4, use a trigonometric identity. For x5, use the Fourier transform of a sinc function and the shift property. Note that the shift property applies to t and not to 3t.

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