Dash

Symbols+plus/'plʌs/¨double dot/dʌbl dɒt/:is to, ratio of/reɪʃɪəʊ/f(x) fxf; function/ef/ /'fʌŋkʃən/f'(x)f dash; derivative/dæʃ/ /dɪ'rɪvətɪv/What does F...