tentukan nilai maksimum dan minimum dari f(x)=2/-5sin4x-7

Bab Trigonometri
Matematika SMA Kelas XI

sin θ bernilai maksimum = 1
sin θ bernilai minimum = -1

maksimum
f(x) = 2/(-5 . sin 4x - 7)
f(x) = 2/(-5 . 1 - 7)
f(x) = 2/-12
f(x) = -1/6

minimum
f(x) = 2/(-5 . sin 4x - 7)
f(x) = 2/(-5 . -1 - 7)
f(x) = 2/(5 - 7)
f(x) = 2/-2
f(x) = -1