anonymous
  • anonymous
approximate to two decimal places, find the x-intercepts, local maximum and local minimum: p(x)=x^3+2x^2-3x-4
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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amistre64
  • amistre64
derivative it :) for the max and min
amistre64
  • amistre64
3x^2 +4x -3 = 0 is possible max or min
amistre64
  • amistre64
-4/6 +- sqrt(16 -4(-3)(3))/6

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amistre64
  • amistre64
(-2 +- sqrt(5))/3 = max min possibilities
anonymous
  • anonymous
i know how to get the max/min. Im having problems with finding the x-int. This assignment is going to close in a minute so im trying my hardest to find the answer.
amistre64
  • amistre64
quickest way is prolly input it into wolframs graphing calcultor
anonymous
  • anonymous
That website is confusing to me. I dont know which is which.
amistre64
  • amistre64
http://www.wolframalpha.com/input/?i=plot+e^(-0.2x)*sin(x)+from+x%3D0+to+10
amistre64
  • amistre64
the roots are approx. -1, -2.561 and 1.561
amistre64
  • amistre64
the min: .535 the max: -1.868
anonymous
  • anonymous
thanks alot.

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