# What is the lower bound of the polynomial function?

Am I right?

### 1 Answer

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- JimLv 74 weeks ago
Lower Bound ≤ f(x) ≤ Upper bound

Take 1st derivative =0

4x^3 -3x^2 -4x +5 =0

x (x (4 x - 3) - 4) + 5 = 0

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