Nilai integral (sin 2x + 3 cos x) dx.batas atas 1/3phi,batas bawah 0

InTegraL

∫(sin 2x + 3 cos x) dx [π/3...0]
= -1/2 ∫dcos 2x + 3 ∫dsin x
= -1/2 cos 2x + 3sin x
= (-1/2 cos 120° + 3 sin 60°) - (-1/2 cos 0° + 3 sin 0)
= (1/4 + 3/2 √3) + 1/2
= 3/4 (1 + 2√3)