How do I plot the impulse response from this equation?

2013 10 24
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更新时间：2013 10 24
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I have been given an exercise to plot this equation h = h[1] = 1, h[2] = 3, h[3] = -2, h[4] = 9, h[5] = 7; I am very new to Matlab and I am confused as to whether I have to define some of the variables or simply just insert the equation? Sorry I cannot provide much more information I am a Matlab novice.

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Jan
Jan 2013-10-24

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Maybe you want to do something like:
h = [1, 3, -2, 9, 7];
ft_h = fft( h );
ft_h = sqrt( ft_h .* conj( ft_h ) );
plot( ft_h );

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