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f(x) = 2 cos (x - π/3)
m = f'(x) = -2 sin (x - π/3)
Uji titik (π/2, √3)
2 cos (π/2 - π/3) = √3 → titik pd kurva
m = -2 sin (π/2 - π/3) = -1
Garis singgung
y - √3 = -1(x - π/2)
y = -x + √3 + π/2 → jawaban
29.
f(x) = sin (x + 45°)
Cekung ke atas → terbuka ke atas
pd sin x, cekung keatas (bernilai negatif) pd interval 180° < x < 360°
sin (x + 45°)
kurva bergeser 45° ke kiri
shg bernilai negatif pd
interval :
180° - 45° < x < 360° - 45°
135° < x < 315° → jawaban