Jika f(x) = sec x, tentukan nilai f'(2π/3)
Jika f(x) = sec x, tentukan nilai f'(2π/3)!
Jawab:
Kita lakukan perhitungan seperti berikut:
f(x) = sec x
f'(x) = sec x tan x
f'(2π/3) = sec (2π/3) tan (2π/3)
= (–2) × (–√3)
f'(2π/3) = 2√3
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