Lecture2 - So represents a rightward or forward propagating...

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What is a wave? A wave is anything that moves. To displace any function f ( x ) to the right, just change its argument from x to x-a , where a is a positive number. If we let a = v t , where v is positive and t is time, then the displacement will increase with time.
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Unformatted text preview: So represents a rightward, or forward, propagating wave. Similarly, represents a leftward, or backward, propagating wave. v will be the velocity of the wave. f ( x ) f ( x-3) f ( x-2) f ( x-1) x 0 1 2 3 f ( x - v t ) f ( x + v t )...
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