meredith48034 meredith48034

14-03-2020
Mathematics

contestada

find the relative minimum of
y = 3x^3 + 14x^2 - 11x - 46

(_, _)

Respuesta :

amna04352 amna04352

14-03-2020

Answer:

(0.353, -48)

Step-by-step explanation:

dy/dx = 9x² + 28x - 11 = 0

Using the quadratic formula:

x = -3.46 and 0.353

d²y/dx² = 18x + 28

Minima when d²y/dx² is positive

x = 0.35284 or (-14+sqrt(295))/9

y = 3x³ + 14x² - 11x - 46

y = -48.00651351

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