优优班--学霸训练营 > 知识点挑题
全部资源
          排序:
          最新 浏览

          50条信息

            • 1.

              已知函数\(f(x+1)=\dfrac{f(x)}{1+f(x)}\),且\(f(1)=1\),则\(f(10)= \)_________.

            • 2.

              已知奇函数\(f(x)\),当\(x > 0\)时单调递增,且\(f(1)=0\),若\(f(x-1) > 0\),则\(x\)的取值范围为(    )

              A.\(\{x|0 < x < 1\),或\(x > 2\}\)
              B.\(\{x|x < 0\),或\(x > 2\}\)
              C.\(\{x|x < 0\),或\(x > 3\}\)
              D.\(\{x|x < -1\),或\(x > 1\}\)
            • 3.

              定义在\(R\)上的奇函数\(f(x)\)满足:对任意\({{x}_{1}},{{x}_{2}}\in \left[ 0,+\infty \right)\),且\({{x}_{1}}\ne {{x}_{2}}\),都有\(({{x}_{1}}-{{x}_{2}})\left[ f({{x}_{1}})-f({{x}_{2}}) \right] > 0\) ,则   \((\)   \()\)

              A.\(f(3) < f(-2) < f(1)\)
              B.\(f(1) < f(-2) < f(3)\) 

              C.\(f(-2) < f(1) < f(3)\)
              D.\(f(3) < f(1) < f(-2)\)
            • 4.
              已知函数\(f(x)\)满足\(f(a+b)=f(a)⋅f(b)\),\(f(1)=2\),则\( \dfrac {f^{2}(1)+f(2)}{f(1)}+ \dfrac {f^{2}(2)+f(4)}{f(3)}+ \dfrac {f^{2}(3)+f(6)}{f(5)}+ \dfrac {f^{2}(4)+f(8)}{f(7)}=(\)  \()\)
              A.\(4\)
              B.\(8\)
              C.\(12\)
              D.\(16\)
            • 5.
              函数\(f(x)\)定义域为\(R\),对任意\(x\),\(y\)都有\(f(xy)=f(x)+f(y)\),则\(f(0)=\) ______ .
            • 6.
              设\(f(x)\)为定义在\(R\)上的奇函数,\(f(1)=1\),\(f(x+2)=f(x)+f(2)\),则\(f(5)=\) ______ .
            • 7.

              已知对于任意的\(x,y > 0\),都有\(f\left( x+1 \right)=f\left( x \right)+f\left( x+2 \right)\),且\(f\left( 1 \right)=1,f\left( 2 \right)=3\),则\(f\left( 2017 \right)=\) \((\)   \()\)   

              A.\(-1\)
              B.\(-3\)
              C.\(1\)
              D.\(3\)
            • 8.

              函数\(f(x)\)的定义域为\([0,2]\),则函数\(f({{x}^{2}})\)的定义域是(    )

              A.\(\left[ -2,2 \right]\)
              B.\(\left[ -\sqrt{2,}\sqrt{2} \right]\)
              C.\(\left[ 0,2 \right]\)
              D.\(\left[ 0,4 \right]\)
            • 9.

              设函数\(y=f(x)\)对任意实数\(x,y\)都有\(f(x+y)=f(x)+f(y)+2xy\).

              \((\)Ⅰ\()\)若\(f(1)=1\),求\(f(2),f(3),f\left( 4 \right)\)的值;

              \((\)Ⅱ\()\)在\((\)Ⅰ\()\)的条件下,猜想\(f(n)(n\in {{N}^{*}})\)的表达式,并用数学归纳法加以证明.

            • 10.

              已知\(f(x)\)是定义在\(R\)上的奇函数,且\(f(x+3)=f(x),\)当\(x\in (-2,0)\)时,\(f(x)={{2}^{x}},\)则\(f(2015)+f(2014)+f(2013)=\)          

            0/40

            进入组卷