Question

Exercitiul 4 si 5 va rog, dau coroana

Answer 1

4. f(x)=(x-1)²-x²=
=x²-2x+1-x²=-2x+1
f(0)=1=>A(0,1)€Gf
f(1)=-1=>B(1,-1)€Gf

5.mx²+nx+1=0
a) m=-1
n=0 =>-x²+0+1=0
a=-1
b=0
c=1
discriminanta=b²-4ac
=0+4=4
x1,2=-b+-√discri. /2a
=0+-√4 /-2= 0+-2 /-2
x1=2/-2=-1
x2=-2/-2=1