已知A(x1,y1),B(x2,y2)是抛物线y平方=4x上的点,F是抛物线的焦点.若向量AF=mBF(m不等于0,m∈R),且x1+x2=6,则|AB|等于?
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/12 05:02:47
![已知A(x1,y1),B(x2,y2)是抛物线y平方=4x上的点,F是抛物线的焦点.若向量AF=mBF(m不等于0,m∈R),且x1+x2=6,则|AB|等于?](/uploads/image/z/1170215-71-5.jpg?t=%E5%B7%B2%E7%9F%A5A%28x1%2Cy1%29%2CB%28x2%2Cy2%29%E6%98%AF%E6%8A%9B%E7%89%A9%E7%BA%BFy%E5%B9%B3%E6%96%B9%3D4x%E4%B8%8A%E7%9A%84%E7%82%B9%2CF%E6%98%AF%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E7%84%A6%E7%82%B9.%E8%8B%A5%E5%90%91%E9%87%8FAF%3DmBF%28m%E4%B8%8D%E7%AD%89%E4%BA%8E0%2Cm%E2%88%88R%29%2C%E4%B8%94x1%2Bx2%3D6%2C%E5%88%99%7CAB%7C%E7%AD%89%E4%BA%8E%3F)
x͒MN@ǯ26-Lĸvxݏ!i.1@#ja!FhD
qә+Z#^&WȳhwMURDWʣ\6|Cc )Ptx-uiӴ
j
UQ#ӯry[C
=[*'αeg~()qk p< W.rA]2'2ˠe(DPehtt!japM6m
Z?RA'A8,E}~@nCN4f3P0(hKax
֨CZVxg/0XVi