题型:解答题 题类:月考试卷 难易度:较易
新年份:2021
②设直线\(l\)与准线\({l}^{'}\)交于点\(N\),若\(\left|MN\right|=\left|AB\right|\),求直线\(l\)的方程.
题型:解答题 题类:月考试卷 难易度:较易
新年份:2021
已知\(\overrightarrow{a}\),\(\overrightarrow{b}\),\(\overrightarrow{c}\)是同一平面内的三个向量,其中\(\overrightarrow{a}=(1,\sqrt{3}).\)
\((1)\)若\(\left|\overrightarrow{c}\right|=4\),且\(\overrightarrow{c}//\overrightarrow{a}\),求\(\overrightarrow{c}\)的坐标;
\((2)\)若\(|\overrightarrow{b}|=1\),且\((\overrightarrow{a}+\overrightarrow{b}){\rm⊥}(\overrightarrow{a}-\dfrac{5}{2}\overrightarrow{b})\),求\(\overrightarrow{a}\)与\(\overrightarrow{b}\)的夹角\(θ.\)
题型:解答题 题类:月考试卷 难易度:较易
新年份:2021
某同学用“五点法”画函数\(f(x)=A\sin(\omega x+\varphi)+B(\)其中\(A>0\),\(\omega>0\),\(|\varphi|< \dfrac{\pi}{2})\)在某一个周期内的图象时,列表并填入部分数据,如表:
\(\omega x+\varphi\) | \(0\) | \(\dfrac{\pi}{2}\) | \(\pi\) | \(\dfrac{3\pi}{2}\) | \(2\pi\) |
\(x\) | \(\dfrac{\pi}{3}\) | \(\dfrac{5\pi}{6}\) | |||
\(A\sin(\omega x+\varphi)+B\) | \(3\) | \(-1\) |
题型:解答题 题类:月考试卷 难易度:较易
新年份:2021