Dengan menggunakan uji turunan kedua, fungsi h(x)=sin3x−4h\left(x\right)=\sin 3x-4h(x)=sin3x−4 dengan 0≤x≤2π0\le x\le2\pi0≤x≤2π mempunyai titik balik minimum ....
(16π, −3), (56π, −3),(\frac{1}{6}\pi,\ -3),\ (\frac{5}{6}\pi,\ -3),(61π, −3), (65π, −3), dan (96π, −3)(\frac{9}{6}\pi,\ -3)(69π, −3)
(16π, −9), (56π, −9),(\frac{1}{6}\pi,\ -9),\ (\frac{5}{6}\pi,\ -9),(61π, −9), (65π, −9), dan (96π, −9)(\frac{9}{6}\pi,\ -9)(69π, −9)
(12π, −3), (76π, −3),(\frac{1}{2}\pi,\ -3),\ (\frac{7}{6}\pi,\ -3),(21π, −3), (67π, −3), dan (116π, −3)(\frac{11}{6}\pi,\ -3)(611π, −3)
(12π, −9), (76π, −9),(\frac{1}{2}\pi,\ -9),\ (\frac{7}{6}\pi,\ -9),(21π, −9), (67π, −9), dan (116π, −9)(\frac{11}{6}\pi,\ -9)(611π, −9)
(12π, −5), (76π, −5),(\frac{1}{2}\pi,\ -5),\ (\frac{7}{6}\pi,\ -5),(21π, −5), (67π, −5), dan (116π, −5)(\frac{11}{6}\pi,\ -5)(611π, −5)