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how to prove that a wave given as A.exp[i (wt - kx) ] is moving in positive x direction ?
similarly, how to prove that a wave given as A.exp[i (wt + kx) ] is moving in negative x direction ?
Thanks a lot
similarly, how to prove that a wave given as A.exp[i (wt + kx) ] is moving in negative x direction ?
Thanks a lot