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2. Figure below shows a signal x(t). Sketch and describe mathematically this signal time-compressed by factor 3. Repeat the problem for the same signal time-expanded by factor 2. The signal

x(t) can be described as x(t)=\left\{\begin{array}{ll} 2 & -1.5 \leq t<0 \\ 2 e^{-1 / 2} & 0 \leq t<3 \\ 0 & \text { otherwise } \end{array}\right.

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