Question

determinati a E R, daca A (a, 1) E Gf, unde f:r->R, f(x) = x² - 1

Answer 1

f(x)=y
x=a
y=1

f(x) =x^2-1
=1

x^2-1=1
x^2=2
x= radical din 2 =a

a= radical din 2