二次函数f(x)=ax^2+bx+c对任意实数x,都有f(x)≥x 且x∈(1,3)时,有f(x)≤1/8(x+2)^2 求证:(1).f(2)=2 (2).若f(-2)=0,求f(x)表达式
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/14 07:20:55
![二次函数f(x)=ax^2+bx+c对任意实数x,都有f(x)≥x 且x∈(1,3)时,有f(x)≤1/8(x+2)^2 求证:(1).f(2)=2 (2).若f(-2)=0,求f(x)表达式](/uploads/image/z/5304360-48-0.jpg?t=%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0f%28x%29%3Dax%5E2%2Bbx%2Bc%E5%AF%B9%E4%BB%BB%E6%84%8F%E5%AE%9E%E6%95%B0x%2C%E9%83%BD%E6%9C%89f%28x%29%E2%89%A5x+%E4%B8%94x%E2%88%88%EF%BC%881%2C3%EF%BC%89%E6%97%B6%2C%E6%9C%89f%28x%29%E2%89%A41%2F8%28x%2B2%29%5E2+%E6%B1%82%E8%AF%81%EF%BC%9A%281%29.f%282%29%3D2+%282%29.%E8%8B%A5f%28-2%29%3D0%2C%E6%B1%82f%EF%BC%88x%EF%BC%89%E8%A1%A8%E8%BE%BE%E5%BC%8F)
xn@_%'+x!v)GQ!1TuԖi*m@P"RCA+ndIq
<<`qQ`iԐGcw-F-ȋgp#N*إNt8 T2IL"j:OcԬ$H@+_\<4;po6h@"tO̥DL
&f֟#t'7a{
hsQ$o^A-ߵLJ*ޭa&UTCnaH&