Đạo hàm của hàm số \(y = \dfrac{1}{{\sin x + {\rm{cos}}\,x}}\) là:
A.\(y' = \dfrac{{{\rm{cos}}\,x - \sin \,x}}{{{{\left( {\sin x + {\rm{cos}}\,x} \right)}^2}}}\).
B.\(y' = \dfrac{1}{{{{\left( {\sin x + {\rm{cos}}\,x} \right)}^2}}}\).
C.\(y' = \dfrac{{ - 1}}{{{{\left( {\sin x + {\rm{cos}}\,x} \right)}^2}}}\).
D.\(y' = \dfrac{{\sin \,x - {\rm{cos}}\,x}}{{{{\left( {\sin x + {\rm{cos}}\,x} \right)}^2}}}\).
A.\(y' = \dfrac{{{\rm{cos}}\,x - \sin \,x}}{{{{\left( {\sin x + {\rm{cos}}\,x} \right)}^2}}}\).
B.\(y' = \dfrac{1}{{{{\left( {\sin x + {\rm{cos}}\,x} \right)}^2}}}\).
C.\(y' = \dfrac{{ - 1}}{{{{\left( {\sin x + {\rm{cos}}\,x} \right)}^2}}}\).
D.\(y' = \dfrac{{\sin \,x - {\rm{cos}}\,x}}{{{{\left( {\sin x + {\rm{cos}}\,x} \right)}^2}}}\).
Loga
Hóa Học lớp 12
