2 Jadi ∀ ∃ = ln( + √1 + ) ∋ ( ) Jadi ∶ → , ( ) = sinh memiliki invers Jelas = sinh −1 ⇔ = sinh −1 Jadi sinh = ln ( + √1 + ) 2 Gambar 6.5 Grafik fungsi sinh −1 Turunan invers fungsi hiperbolik (sinh −1 ) 1 . = √1 + 2