一道抛物线的题目已知抛物线y=ax^2+bx+c的顶点坐标为(2,4).1、使用含a的代数式分别表示b、c;2、若直线y=kx+4(k不=0)与y轴及该抛物线的交点依次为D、E、F,且S三角形ODE:S三角形OEF=1:3,其中O为坐标
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/02 23:49:16
![一道抛物线的题目已知抛物线y=ax^2+bx+c的顶点坐标为(2,4).1、使用含a的代数式分别表示b、c;2、若直线y=kx+4(k不=0)与y轴及该抛物线的交点依次为D、E、F,且S三角形ODE:S三角形OEF=1:3,其中O为坐标](/uploads/image/z/5459968-64-8.jpg?t=%E4%B8%80%E9%81%93%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E9%A2%98%E7%9B%AE%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dax%5E2%2Bbx%2Bc%E7%9A%84%E9%A1%B6%E7%82%B9%E5%9D%90%E6%A0%87%E4%B8%BA%282%2C4%29.1%E3%80%81%E4%BD%BF%E7%94%A8%E5%90%ABa%E7%9A%84%E4%BB%A3%E6%95%B0%E5%BC%8F%E5%88%86%E5%88%AB%E8%A1%A8%E7%A4%BAb%E3%80%81c%EF%BC%9B2%E3%80%81%E8%8B%A5%E7%9B%B4%E7%BA%BFy%3Dkx%2B4%28k%E4%B8%8D%3D0%EF%BC%89%E4%B8%8Ey%E8%BD%B4%E5%8F%8A%E8%AF%A5%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E4%BA%A4%E7%82%B9%E4%BE%9D%E6%AC%A1%E4%B8%BAD%E3%80%81E%E3%80%81F%2C%E4%B8%94S%E4%B8%89%E8%A7%92%E5%BD%A2ODE%3AS%E4%B8%89%E8%A7%92%E5%BD%A2OEF%3D1%3A3%2C%E5%85%B6%E4%B8%ADO%E4%B8%BA%E5%9D%90%E6%A0%87)
xTAS@+99 4춌Si8Q;8fpgRP0Hbe(MEѢf)14<8Lvo6Ź [/7ʻwl=?yOkdy':Dv{Ӑ5s9hսqUL^Խ3urPfxzLp/Bcl@I(Rw
yݵ;^}AO['KRҔo]xݏa'^qQ5ђ]݆ZzޜQAO o9^T;_KSLW~ ;G9yBoĭOǐ~8m`m]A6DwevGŦ}[F>gWذ
H7<#@Zs+Q q?;R<(5ؕk*hFeh-&Dk#h`dbU42Ih`\Fx\Æ_cվ$C.,u#6p h}04>w8@m˵qGpJe+9E@[
DA@>
av GprV##g`R! lV1bI0sV9<