12. Locate the Critical points and determine the maxima & minima of y = x3 – 3x2 – 9x + 20. |

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter4: Polynomial And Rational Functions
Section4.6: Variation
Problem 2E
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12. Locate the Critical points and determine the maxima & minima of y = x3 –
3x? – 9x + 20.
13. Locate the Critical points and determine the maxima & minima of y = 4x² +
16x + 9.
14. A box is made of a piece of cardboard 16 x 10 in. by cutting equal squares out of
the corners and turning up the sides. Find the volume of the largest box that can be
made in this way.
Transcribed Image Text:12. Locate the Critical points and determine the maxima & minima of y = x3 – 3x? – 9x + 20. 13. Locate the Critical points and determine the maxima & minima of y = 4x² + 16x + 9. 14. A box is made of a piece of cardboard 16 x 10 in. by cutting equal squares out of the corners and turning up the sides. Find the volume of the largest box that can be made in this way.
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