Respostas
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0,1x^2 - 0,7x + 1 = 0
0,1 = 1/10
0,7 = 7/10
1/10 . x^2 - 7/10 . x + 1 = 0
Δ = b^2 - 4.a.c
Δ = (-7/10)^2 - 4 . (1/10) . 1
Δ = 0,48999999999999994 - 4. (1/10) . 1
Δ = 0,08999999999999991
Há 2 raízes reais.
x = (-b +- √Δ)/2ax' = (-(-7/10) + √0,08999999999999991)/2.(1/10)
x'' = (-(-7/10) - √0,08999999999999991)/2.(1/10)
x' = 0,9999999999999998 / 0.2
x'' = 0,4000000000000001 / 0.2
x' = 4,999999999999998
x'' = 2,0000000000000004
ou
x' = 5
x'' = 2
0,1 = 1/10
0,7 = 7/10
1/10 . x^2 - 7/10 . x + 1 = 0
Δ = b^2 - 4.a.c
Δ = (-7/10)^2 - 4 . (1/10) . 1
Δ = 0,48999999999999994 - 4. (1/10) . 1
Δ = 0,08999999999999991
Há 2 raízes reais.
x = (-b +- √Δ)/2ax' = (-(-7/10) + √0,08999999999999991)/2.(1/10)
x'' = (-(-7/10) - √0,08999999999999991)/2.(1/10)
x' = 0,9999999999999998 / 0.2
x'' = 0,4000000000000001 / 0.2
x' = 4,999999999999998
x'' = 2,0000000000000004
ou
x' = 5
x'' = 2
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