ðɪ ɪnvˈɜːs əvə fˈʌŋkʃən ɪz ɛɡzˈæktli æz lˈaɪt æz ðɪ ɚɹˈɪdʒɪnəl fˈʌŋkʃən ɪz dˈɑːɹk ænd ðɪ ˈʌðɚ wˈeɪ ɚɹˈaʊnd.
the inverse of a function is exactly as light as the original function is dark (and the other way around).