Sa se determine functia de gradul al doilea al carei grafic este tangent la axa Ox in punctul (1,0) si trece prin punctul (0,2). Rog rezolvare explicita impreuna cu formulele folosite.
More Questions From This User See All
Show life that you have a thousand reasons to smile
© Copyright 2024 DOKU.TIPS - All rights reserved.
tg axei Ox daca Δ =0 varf ( 1 , 0 )
x varf = - b /2a ; - b /2a = 1 ; b = - 2a
y varf = - Δ /4a = 0 ; b² -4ac = 0 ; ( -2a)² - 4a ·2 = 0
4a ² - 8a = 0
4a · ( a -2) = 0 a= 0 fals ; a = 2
f( 0) = 2 ; c = 2
a = 2 - b
b = - 2 ·2 = - 4
f(x) = 2x² -4x + 2