'Inverted reflection' diaporamas de présentation

paws.kettering/~drussell/Demos/superposition/superposition.html

http://paws.kettering.edu/~drussell/Demos/superposition/superposition.html. We can invent a solution to the boundary problem by superposing a reflected wave. An inverted reflection ensures that y=0 at the boundary. Boundary condition for a fixed end at x=0: y(0,t) = 0

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