se considera functia f:R=>R. Calculati (fof).
[tex]f(x) = {x}^{2} - 4x + 1[/tex]


Răspuns :

(x²-4x+1)²-4(x²-4x+1)+1=  x^4+16x²+1-8x³+2x²-8x
                                                  -4x² -4             +16x
                                                         +1=

                                          = x^4-8x³+14x²+8x-2