Question

considere as funçaoes
a) f(x)= -x²+8x -15
b) g(x) = 3x² -6x - 9
c) m(x) = -10x²
d) n(x) = - x²/ 8 + x

Answer 1

a) Delta = 4
x' = 3   x'' = 5

b) Delta = 12
 x'' = 3 x'' = -1

c) Delta = 0
x' = 0 x''= 0

d) Delta = 1
 x' = 0   x'' = 8