|¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯|×ღ×|¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯|
Testul 1, exercitiul 6 ｡◕‿◕｡
f : R → R
f ( x ) = 3x² - 2x + 1
★★Varful parabolei are coordonatele: V ( -b/2a ; -Δ/4a )
a = 3 ; b = -2 ; c = 1
Δ = b² - 4ac = ( -2 )² - 4 · 3 · 1 = 4 - 12 = -8
x varf = -b / 2a = -(-2) / 6 = 2 / 6 = 1 / 3
y varf = -Δ / 4a = -(-8) / 12 = 8 / 12 = 2 / 3
⇒ V ( 1 / 3 , 2 / 3 )
|____________________|×ღ×|____________________|
