Tập xác định của hàm số \(y = {{ \tan 5x} \over { \sin 4x - \cos 3x}} \) là:
A.\(D = R\backslash \left\{ {{\pi \over {10}} + {{k\pi } \over 5}\,;\,{\pi \over {14}} - {{k2\pi } \over 7}\,\,\,\left( {k \in Z} \right)} \right\}\)
B.\(D = R\backslash \left\{ {\,{\pi \over {14}} - {{k2\pi } \over 7}\,;\,{\pi \over 2} - k2\pi \,\,\,\left( {k \in Z} \right)} \right\}\)
C.\(D = R\backslash \left\{ {{{k\pi } \over 5}\,;\,{\pi \over {14}} - {{k2\pi } \over 7}\,;\,k2\pi \,\,\,\left( {k \in Z} \right)} \right\}\)
D.\(D = R\backslash \left\{ {{\pi \over {10}} + {{k\pi } \over 5}\,;\,{\pi \over {14}} - {{k2\pi } \over 7}\,;\,{\pi \over 2} - k2\pi \,\,\,\left( {k \in Z} \right)} \right\}\)
A.\(D = R\backslash \left\{ {{\pi \over {10}} + {{k\pi } \over 5}\,;\,{\pi \over {14}} - {{k2\pi } \over 7}\,\,\,\left( {k \in Z} \right)} \right\}\)
B.\(D = R\backslash \left\{ {\,{\pi \over {14}} - {{k2\pi } \over 7}\,;\,{\pi \over 2} - k2\pi \,\,\,\left( {k \in Z} \right)} \right\}\)
C.\(D = R\backslash \left\{ {{{k\pi } \over 5}\,;\,{\pi \over {14}} - {{k2\pi } \over 7}\,;\,k2\pi \,\,\,\left( {k \in Z} \right)} \right\}\)
D.\(D = R\backslash \left\{ {{\pi \over {10}} + {{k\pi } \over 5}\,;\,{\pi \over {14}} - {{k2\pi } \over 7}\,;\,{\pi \over 2} - k2\pi \,\,\,\left( {k \in Z} \right)} \right\}\)
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Hóa Học lớp 12
