Farhan ShaikhDropperSample· 1mo ago
Doppler effect formula signs: when is it plus and when is it minus for source and observer?
Every time I solve a Doppler question I do 50% by guess on the signs. In my head I have: f' = f\,\frac{v \pm v o}{v \mp v s} and I don't have a rule for which one is plus. The textbook example I tried: a source of freque
