Question

Dada a função da posicao horaria 9 +2t-3t2

Answer 1

Resposta:

t = -(2)+-√2²-4(-3)(9)

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2(-3)

t = -2+-√4+108

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-6

t = -2 +- √112

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-6

t = -2 +- √2²·2²·7

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-6

t = -2 +- 4√7

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-6

t = 1 +- 2√7

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3

t' = 1 + 2√7

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3

t' = 1 + 2 · 2,64

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3

t' = 1 + 5,28

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3

t' = 6,28/3

t' ≈ 2,09

t'' ≈ 1 - 5,28

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3

t'' ≈ -4,28/3

t'' ≈ - 1,43