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Long time reader, first time poster.

Here's a tricky one. I have a solid state NMR set of data in 3D. Let's say the signal phases

in the three dimensions are:

exp(i*(A+B*C+C)t_1)

exp(i*(A+B*C+C)t_2)

exp(i*(A+B*C+C)t_3)

given the information, one should be able to (in theory) determine A,B,C... however given the fact that there is a patently non-linear term this is non-trivial. Any ideas?

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# Solving non-linear frequency problem, NMR

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