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(Solved): 1. Determine the DTFTs of the following signals: (a) \( x[n]=\delta[n+4]+\delta[n+2]+\delta[n-2]-\ ...
![1. Determine the DTFTs of the following signals:
(a) \( x[n]=\delta[n+4]+\delta[n+2]+\delta[n-2]-\delta[n-4] \)
(b) \( x[n]=\](https://media.cheggcdn.com/media/06a/06aace7f-ce62-4346-b091-bea11b0d1f77/phpLCkKJT)
1. Determine the DTFTs of the following signals: (a) \( x[n]=\delta[n+4]+\delta[n+2]+\delta[n-2]-\delta[n-4] \) (b) \( x[n]=\left\{\begin{array}{cl}\frac{1}{2}+\frac{1}{2} \cos \left(\frac{\pi}{N} n\right), & |n| \leq N \\ 0, & \text { otherwise }\end{array}\right. \)