The first four harmonics are 880Hz, 1320Hz, 1760Hz and 2200Hz
Fundamental frequency
The fundamental frequency of string fo is 440 Hz
The first four harmonics are expressed as:
Substitute the given parameters
f2 = 2(440) = 880 Hz
f3 = 3(440) = 1320Hz
f4 = 4(440) = 1760Hz
f5 = 5(440) = 2200Hz
Hence the first four harmonics are 880Hz, 1320Hz, 1760Hz and 2200Hz
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