Question

Va rog sa ma ajutati la E2..............

Answer 1

forma canonica este f(x)=a(x+b/2a)²+(-Δ/4a)
a)f(x)=2x²-4x+5
a=2, b=-4, c=5
Δ=-24
f(x)=2(x-1)²-3

b)f(x)=3x²-8x+1
a=3, b=-8, c=1
Δ=52
f(x)=3(x-8/6)²-52/12

c)f(x)=-7x²+8
a=-7, b=0, c=8
Δ=224
f(x)=-7x²+8

d)f(x)=4x²-5x
a=4, b=-5, c=0
Δ=25
f(x)=4(x-5/8)²-25/4

e)f(x)=√3x²-4√2x+√3
a=√3, b=-4√2, c=√3
Δ=20
f(x)=√3(x-4√6/6)²-5√3/3

f)f(x)=3/2x²-7/3x+5/6
a=3/2, b=-7/3, c=5/6
Δ=4/9
f(x)=3/2(x-7/9)²-4/54