某二元一次方程的两个根分别为-2、5,请写出一个经过点(-2.0)(5.0)两点的二次函数的表达式?当m_____时,二次函数y=2x^2-6x+m的函数值总为正值若x为任意实数时,二次三项式x^2-6x+c的值小于0,则
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/13 02:15:20
![某二元一次方程的两个根分别为-2、5,请写出一个经过点(-2.0)(5.0)两点的二次函数的表达式?当m_____时,二次函数y=2x^2-6x+m的函数值总为正值若x为任意实数时,二次三项式x^2-6x+c的值小于0,则](/uploads/image/z/1853701-61-1.jpg?t=%E6%9F%90%E4%BA%8C%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%E7%9A%84%E4%B8%A4%E4%B8%AA%E6%A0%B9%E5%88%86%E5%88%AB%E4%B8%BA-2%E3%80%815%2C%E8%AF%B7%E5%86%99%E5%87%BA%E4%B8%80%E4%B8%AA%E7%BB%8F%E8%BF%87%E7%82%B9%EF%BC%88-2.0%EF%BC%89%EF%BC%885.0%EF%BC%89%E4%B8%A4%E7%82%B9%E7%9A%84%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0%E7%9A%84%E8%A1%A8%E8%BE%BE%E5%BC%8F%3F%E5%BD%93m_____%E6%97%B6%2C%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0y%3D2x%5E2-6x%2Bm%E7%9A%84%E5%87%BD%E6%95%B0%E5%80%BC%E6%80%BB%E4%B8%BA%E6%AD%A3%E5%80%BC%E8%8B%A5x%E4%B8%BA%E4%BB%BB%E6%84%8F%E5%AE%9E%E6%95%B0%E6%97%B6%2C%E4%BA%8C%E6%AC%A1%E4%B8%89%E9%A1%B9%E5%BC%8Fx%5E2-6x%2Bc%E7%9A%84%E5%80%BC%E5%B0%8F%E4%BA%8E0%2C%E5%88%99)
xRn@~NUBlpl@j7iE|vUoOniJ5ɯYjCW5;373ߎXȗwk7{I"Ax?#F7r16#c}DO|5 f`ud^qmH>5n~P^C}f>K+-+
R ;j|U|웸w3 JLXdʢD[FG"ABDB&@YcGW%_LBVeWPbײzOaK='u