Question

Approximate the x-intercepts and local extrema for the polynomial 0.1x4 + 0.2x3 - 15x2 - 17x...

Approximate the x-intercepts and local extrema for the polynomial

0.1x4 + 0.2x3 - 15x2 - 17x + 100

Round answers to two decimal places.
As part of your solution, show the parameters for the calculator window that you used

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Answer #1

Solution -

  

From the above graph we can see x intercepts are -12.44, -3.27, 2.13 ,11.58 .

  

From above graph we can see local maxima is 104.8 at x = -0.56

  

From above graph we can see that local minima is -485.64 at x = 8.24 .

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