优优班--学霸训练营 > 知识点挑题
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            • 1.

              在同一直角坐标系中,函数\(f\left(x\right)={x}^{a}\left(x\geqslant 0\right),g\left(x\right)={\log }_{a}x \)的图像可能是\((\)    \()\)

              A.
              B.
              C.
              D.
            • 2.

              设\(a={{0.6}^{0.6}}\),\(b={{0.6}^{1.5}}\),\(c={{1.5}^{0.6}}\),则\(a\),\(b\),\(c\)的大小关系是(    )

              A.\(a < b < c\)
              B.\(a < c < b\)
              C.\(b < a < c\)
              D.\(b < c < a\)
            • 3.

              已知幂函数\(f\left( x \right)={{x}^{\alpha }}\)过点\(\left( 2,8 \right)\),则满足\(f\left( a+1 \right) < f\left( 3-2a \right)\)的\(a\)的取值范围是___________.

            • 4.

              函数\(f(x){=}(m^{2}{-}m{-}1)x{{ }}^{m^{2}{+}m{-}3}\)是幂函数,且当\(x{∈}(0{,}{+∞})\)时\(f(x)\)是减函数,则实数\(m{=}\) ______ .

            • 5.

              若\(a > b > 1,0 < c < 1 \),则

              A.\({a}^{c} < {b}^{c} \)  

              B.\(a{b}^{c} < b{a}^{c} \)  

              C.\(a{\log }_{b}c < b{\log }_{a}c \)   

              D.\({\log }_{a}c < {\log }_{b}c \)
            • 6.

              设\(\dfrac{1}{3} < {{\left( \dfrac{1}{3} \right)}^{b}} < {{\left( \dfrac{1}{3} \right)}^{a}} < 1\),则

              A.\(a^{a} < a^{b} < b^{a}\)
              B.\(a^{a} < b^{a} < a^{b}\)
              C.\(a^{b} < a^{a} < b^{a}\)
              D.\(a^{b} < b^{a} < a^{a}\)
            • 7.

              已知幂函数\(f(x)=k{{x}^{\alpha }}\)的图像经过点\((\dfrac{1}{2},\dfrac{\sqrt{2}}{2})\),则\(k+α= \)_________.

            • 8.
              已知幂函数\(f(x)\)的图象过点\((2,4)\),则\(f(3)\)的值是 ______ .
            • 9. 若幂函数\(y=f(x)\)的图象过点\((4,2)\),则\(f(16)=\) ______ .
            • 10.
              若幂函数\(y=f(x)\)的图象过点\((5, \dfrac {1}{5})\),则\(f(2^{1-\log _{2}3})\)为\((\)  \()\)
              A.\( \dfrac {1}{3}\)
              B.\( \dfrac {1}{2}\)
              C.\( \dfrac {3}{2}\)
              D.\(-1\)
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