Apakah tempoh f (t) = cos ((8 t) / 3)?

Apakah tempoh f (t) = cos ((8 t) / 3)?
Anonim

Jawapan:

#color (biru) ("Tempoh" = 3/4 pi #

Penjelasan:

Bentuk standard fungsi kosinus ialah #f (x) = A cos (Bx - C) + D #

# "Diberikan:" f (t) = cos (8/3 t) #

#A = 1, B = 8/3, C = D = 0 #

#Amplitude = | A | = 1 #

# "Tempoh" = (2pi) / | B | = (2pi) / | 8/3 | = 3/4 pi #

# "Pergeseran Tahap" = (-C) / B = 0 #

# "Shift Vertical" = D = 0 #

graf {cos (8/3 x) -10, 10, -5, 5}