Question

$f=x^{3} -6x+m\\A) Pentru m=2, aratati ca (f1)=0$

Answer 1

$\it m=2\Rightarrow f(x)=x^3-6x+2 \Rightarrow f(1)=1-6+2 =3-6=-3\ne0$

Answer 2

f(x)=x^3-6x+2

f(1)=1-6+2=-6+3=-3

f(1)=/=0