若三次多項函數[math]f\left(x\right)[/math]的圖形經過A(-5,6),B(-2,2),C(1,4),D(4,-3),則此三次多項函數[math]f\left(x\right)=?[/math]
若三次多項函數[math]f_1\left(x\right)[/math]的圖形經過A(-5,6),[color=#0000ff]B'(-2,0)[/color],[color=#0000ff]C'(1,0)[/color],[color=#0000ff]D'(4,0)[/color],則此三次多項函數[math]f_1\left(x\right)=?[/math]
若三次多項函數[math]f_2\left(x\right)[/math]的圖形經過[color=#0000ff]A'(-5,0)[/color],B(-2,2),[color=#0000ff]C'(1,0)[/color],[color=#0000ff]D'(4,0)[/color],則此三次多項函數[math]f_2\left(x\right)=?[/math]
若三次多項函數[math]f_3\left(x\right)[/math]的圖形經過[color=#0000ff]A'(-5,0)[/color],[color=#0000ff]B'(-2,0)[/color],C(1,4),[color=#0000ff]D'(4,0)[/color],則此三次多項函數[math]f_3\left(x\right)=?[/math]
若三次多項函數[math]f_4\left(x\right)[/math]的圖形經過[color=#0000ff]A'(-5,0)[/color],[color=#0000ff]B'(-2,0)[/color],[color=#0000ff]C'(1,0)[/color],D(4,-3),則此三次多項函數[math]f_4\left(x\right)=?[/math]