policz b:
3-b=2/b
3 - b = 2 / b /* b gdzie b ≠ 0
b*(3 - b) = 2
-b² + 3b - 2 = 0
b² - 3b + 2 = 0
Δ = (-3)² - 4 * 1 * 2 = 9 - 8 = 1
√Δ = 1
b1 = (3 - 1)/2 = 2/2 = 1
b2 = (3 + 1)/2 = 4/2 = 2
odp. b = 1 lub b = 2
Δ = b²-4ac
Δ = 3²- 4 x (-1) x (-2) = 1
√Δ = √1 = 1
x₁ = -b-√Δ/2a
x₁ = -3-1/-2 = 2
x₂ = -b+√Δ/2a
x₂ = -3+1/-2 = 1
więc b = 2 ∧ b = 1
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3 - b = 2 / b /* b gdzie b ≠ 0
b*(3 - b) = 2
-b² + 3b - 2 = 0
b² - 3b + 2 = 0
Δ = (-3)² - 4 * 1 * 2 = 9 - 8 = 1
√Δ = 1
b1 = (3 - 1)/2 = 2/2 = 1
b2 = (3 + 1)/2 = 4/2 = 2
odp. b = 1 lub b = 2
Δ = b²-4ac
Δ = 3²- 4 x (-1) x (-2) = 1
√Δ = √1 = 1
x₁ = -b-√Δ/2a
x₁ = -3-1/-2 = 2
x₂ = -b+√Δ/2a
x₂ = -3+1/-2 = 1
więc b = 2 ∧ b = 1
----------------------------------------------------------------------------------------------------
Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam :)