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9. Determine whether the following systems are invertible. If so, find the inverse. If not, find 2 input signals that produce the same output. (a) y)-r (b) yn]-ewl, where a is a real number (c) yt)-vx(t) for real-valued signals x(t) (d) yIn] xIn] (complex conjugate) 10. In most of the book, we will be discussing ways to analyze linear time-invariant (LTI) systems. As we will explore in much more detail later, the response of an LTI system to a particular input signal determines the responses of the system to other related input signals. Suppose that the response of an LTI system to the input signal x, [n] drawn below is y[n] also drawn. Determine the response of the system when the input signal is x,[n] instead. cn? 32

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т.ere 【ystn is invertible 9(a) df Х 冰 t is invertible n ConTugede arf-huYse

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