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题型:填空题 题类:模拟题 难易度:中档
年份:2020
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题型:填空题 题类:月考试卷 难易度:中档
题型:填空题 题类:其他 难易度:中档
已知定义在\(\left ( { -∞,+∞ } \right )\)的偶函数\(f\left ( { x } \right )\)在\(\left [ { 0,+∞ } \right )\)单调递减,\(f\left ( { -1 } \right )=-\dfrac { 1 } { 2 }\),若\(f\left ( { 2x-1 } \right )\geqslant -\dfrac { 1 } { 2 }\),则\(x\)的取值范围________.
题型:填空题 题类:期中考试 难易度:中档
已知向量\(\vec{a}=\left( \cos x,-1 \right)\),\(\vec{b}=\left( \sqrt{3}\sin x,-\dfrac{1}{2} \right)\),若\(\vec{a}\text{//}\vec{b}\),则\(\left| {\vec{a}} \right|=\)__________.
已知函数\(f\left( x \right)={{\sin }^{2}}\omega x-\dfrac{1}{2}\),\(( \omega > 0 )\)的最小正周期为\(\dfrac{\pi }{2}\),若将其图象沿\(x\)轴向右平移\(a\)个单位\(a > 0\),所得图象关于原点对称,则实数\(a\)的最小值为___________;
已知\(\tan θ=3\sqrt[] { 3 }\),则\(\dfrac { \cos θ } { \sin \left ( { θ-60° } \right ) }=\)__________.
已知函数\(f(x)\)的定义域为\(R\),\(f\left ( { x+1 } \right )\)为奇函数,\(f\left ( { 0 } \right )=1\),则\(f\left ( { 2 } \right )=\)__________.