共50条信息
若数列\(\left\{ {{\log }_{3}}{{a}_{n}} \right\}\)为等差数列，且\({{\log }_{3}}{{a}_{1}}+{{\log }_{3}}{{a}_{2}}+\cdots +{{\log }_{3}}{{a}_{10}}=10\)，则\({{a}_{5}}{{a}_{6}}=\)___________．
函数\(f(x){=}e^{\ln\left| x \right|}{+}\dfrac{1}{x}\)的大致图象为( )
设\(a{=}\log_{5}10{,}b{=}\log_{6}12{,}c{=}1{+}\log_{7}2\)，则\(({ })\)
已知\(2\lg (x-2y)=\lg x+\lg y\)，则\(\dfrac{x}{y}\)的值为 \((\) \()\)
已知\( \dfrac{1}{\log _{2}a}+ \dfrac{1}{\log _{4}a}=3\)，则\(a=\)__________．
已知函数\(f(x)=\begin{cases} & \log \dfrac{1}{2}x,x > 0, \\ & \cos x,x\leqslant 0, \end{cases}\)则\(f\left( f\left( -\dfrac{\pi }{3} \right) \right)=\)________
\(\log _{a}(MN)=\log _{a}M+\log _{a}N.(\) \()\)
已知\(a={{5}^{{lo}{{{g}}_{2}}3.4}}\)，\(b={{5}^{{lo}{{{g}}_{4}}3.6}}\)，\(c={{\left( \dfrac{1}{5} \right)}^{{lo}{{{g}}_{3}}0.3}}\)，则\((\) \()\)
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