This is a typical problem - but in reverse. How do I do this? I need to find f(x) = ax^4 + bx^3 - cx^2 -dx - e (solve for a,b,c,d,e). What I'm given are 2 inflection points ((v3)/3, -7.5752) and (-(v3)/3, -.647009) and a local minimum at (1.26255, -11.8696). I hope you can help!