For 10 points, name this term that in acoustics refers to frequencies that are integer multiples of the fundamental and thus names the analysis of additively combined waves.
This sort of range is formed from points ABCD if AC over CB equals AD over DB. This term is given to any function that has continuous second partial derivatives and satisfies Laplace's equation. The angular part of the solutions of Laplace's equation in spherical coordinates are called spherical this. This term describes the series that is the sum of one over n for one to infinity. This type of mean is the reciprocal of the mean of the reciprocals. For 10 points, name this term that in acoustics refers to frequencies that are integer multiples of the fundamental and thus names the analysis of additively combined waves.
This sort of range is formed from points ABCD if AC over CB equals AD over DB.
harmonics