Standing question - real straightforward- Workings given

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elemis
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W= 27.2

K=15.71

A=0.1

Now to determine the harmonic.

ImageUploadedByPhysics Forums1366812499.446125.jpg


This formula gives the harmonic to be 4.5. This can't be possible since n has to be an integer.

I realize this wave has a node at one end and an anti node at the other.

I also realize that this wave on the string has a wavelength =0.4 by using K=2pi/lambdaWhat do I do ? :(
 

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Or am I wrong in assuming this is a wave has a node at one end and an anti node at the other ?