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Let's say the solution on the left hand side is a sinkx + b coskx = 0

We get one solution for each E if we omitted a and another solution if we omitted b. However, how to conclude that they are all the solutions? Will there be any solution of the 5 coefficients such that a and b are both not zero?

Thank you

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# I Question about the solution of TISE (finite potential barrier)

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