Principle of superposition: The principle of superposition of waves states that when two or more waves are simultaneously interfere, the resultant displacement of any particle is equal to the algebraic sum of the displacements of all the waves. If y1 = f1 ( x − vt ) ; y2 = f 2 ( x − vt ) ..... yn = f n ( x − vt ) Then n y = f1 ( x − vt ) + f 2 ( x − vt ) + ... + f n ( x − vt ) = ∑ f i ( x − vt )
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