\(y = \dfrac{{\sin x}}{x}\)
A.\(y' = \dfrac{{x\cos x - \sin x}}{{{x^2}}}\).
B.\(y' = \dfrac{{x\cos x + \sin x}}{{{x^2}}}\).
C.\(y' = -\dfrac{{x\cos x - \sin x}}{{{x^2}}}\).
D.\(y' =-\dfrac{{x\cos x + \sin x}}{{{x^2}}}\).
A.\(y' = \dfrac{{x\cos x - \sin x}}{{{x^2}}}\).
B.\(y' = \dfrac{{x\cos x + \sin x}}{{{x^2}}}\).
C.\(y' = -\dfrac{{x\cos x - \sin x}}{{{x^2}}}\).
D.\(y' =-\dfrac{{x\cos x + \sin x}}{{{x^2}}}\).
Loga
Hóa Học lớp 12
