let f(x)=ax^2-c,if-4≤f（1）≤-1 and -1≤f（2）≤5,then f（3）的取值范围?A -7≤f（3）≤28B 0≤f（3）≤3C -1≤f（3）≤7D -1≤f（3）≤20我希望有解答过程thank you

let f(x)=ax^2-c,if-4≤f（1）≤-1 and -1≤f（2）≤5,then f（3）的取值范围?A -7≤f（3）≤28B 0≤f（3）≤3C -1≤f（3）≤7D -1≤f（3）≤20我希望有解答过程thank you f(x)=ax^2+bx+c,f(x) 二次函数f(x)=ax^2-c满足:-4 若f(x)=ax^2-c满足-4 已知f(x)=ax^2+c,且-4 f(x)=ax²-ax-4 已知f(x)=ax^2+2bx+c(a f(x)=ax^2+bx+c,x1 二次函数f(x)=ax^2+bx+c(a 二次函数f(x)=ax^2+bx+c(a 设函数f(x)=ax^2+bx+c (a f(x)=ax^2+bx+c(a 设函数f(x)=ax^2+bx+c((a≠0),满足f(x+1)=f(-x-3),且f(-2)>f(2),解不等式f(-2x^2+2x-3)>f(x^2+4x+3) 若函数f(x)=ax^4+bx^2+c满足f'(1)=2,则f'(-1)=? 1.given the function f(x) = x*2 -4x -5,find the values of:a) f(k-2) b) f(x*2) - x*2 f(1)2.given two functions f(x) = x*2 -3 and g(x) = 3x-4,find the values of:a) f(k+1) -g(k-1) b) f(g(x)) c) g(f(x))3.let f(x) = 1/1-x,finda) f(f(x)) b) f(f(f(x))) c) f let f be the function that is given by f(x)=(ax+b)/(x^2-c) and that has the following properties:1) the graph of f is symmetric with respect to the y-axis2)lim x-> 2+ f(x)=+00（正无穷）3）f(1)=-2a)determine the values of a,b,cb)write an equatio 1、设二次函数f(x)=ax(平方)+bx+c满足f(x+1)-f(x)=2x f(x-1)=ax^2+bx+c f(x)=?那位朋友分析下 .