Giải phương trình \(4{\sin ^3}x + 3{\cos ^3}x - 3\sin x - {\sin ^2}x\cos x = 0\)
A.\(x = {\pi \over 4} + k2\pi \,\,,\,\,x = \pm {\pi \over 3} + k2\pi \,\,\left( {k \in Z} \right)\)
B.\(x = {\pi \over 4} + {{k\pi } \over 2}\,\,,\,\,x = \pm {\pi \over 3} + {{k\pi } \over 2}\,\,\left( {k \in Z} \right)\)
C.\(x = {\pi \over 4} + {{k\pi } \over 3}\,\,,\,\,x = \pm {\pi \over 3} + {{k\pi } \over 3}\,\,\left( {k \in Z} \right)\)
D.\(x = {\pi \over 4} + k\pi \,\,,\,\,x = \pm {\pi \over 3} + k\pi \,\,\left( {k \in Z} \right)\)
A.\(x = {\pi \over 4} + k2\pi \,\,,\,\,x = \pm {\pi \over 3} + k2\pi \,\,\left( {k \in Z} \right)\)
B.\(x = {\pi \over 4} + {{k\pi } \over 2}\,\,,\,\,x = \pm {\pi \over 3} + {{k\pi } \over 2}\,\,\left( {k \in Z} \right)\)
C.\(x = {\pi \over 4} + {{k\pi } \over 3}\,\,,\,\,x = \pm {\pi \over 3} + {{k\pi } \over 3}\,\,\left( {k \in Z} \right)\)
D.\(x = {\pi \over 4} + k\pi \,\,,\,\,x = \pm {\pi \over 3} + k\pi \,\,\left( {k \in Z} \right)\)
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Hóa Học lớp 12
