共50条信息
设\(x+3y=2\),则函数\(z={{3}^{x}}+{{27}^{y}}\)的最小值是( )
若函数\(f(x)\)满足\(f(4)=2\),且对于任意正数\({{x}_{1}},{{x}_{2}}\),都有\(f({{x}_{1}}\cdot {{x}_{2}})=f({{x}_{1}})+f({{x}_{2}})\)成立\(.\)则\(f(x)\)可能为
计算:\({{(\dfrac{2}{3})}^{0}}+3\times {{(\dfrac{9}{4})}^{-\frac{1}{2}}}+(\lg 4+\lg 25)\)的值是 ______.
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