1a) A real-valued signal x(t) is known to be uniquely determined by its samples when the sampling frequency is a, = 10,000. For what values ofo is Xdju) guaranteed to be zero? Please note that...

1a) A real-valued signal x(t) is known to be uniquely determined by its samples when the sampling frequency is a, = 10,000. For what values ofo is Xdju) guaranteed to be zero? Please note that frequency can be positive and negative. How would your answer change if x(t) is not a real-valued signal? Please note that-oo