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(5 points) Find the absolute maximum and absolute minimum values of the function f(x)=x 3 −6x 2 −63x+2 over each of the indicated intervals. (a) Interval=[−4,0]. 1. Absolute maximum= 2. Absolute minimum = (b) Interval =[−1,8]. 1. Absolute maximum = 2. Absolute minimum = (c) Interval =[−4,8].

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Explanation:

To find the absolute maximum and absolute minimum values of the function f(x) = x^3 - 6x^2 - 63x + 2 over the indicated intervals, we need to evaluate the function at the critical points and endpoints of each interval. Let's calculate each value step by step:

(a) Interval = [-4, 0]

1. To find the critical points, we take the derivative of the function and set it equal to zero:

f'(x) = 3x^2 - 12x - 63

Setting f'(x) = 0 and solving for x:

3x^2 - 12x - 63 = 0

Solving this quadratic equation, we find two critical points: x = -3 and x = 7.

2. Next, we evaluate the function at the critical points and endpoints of the interval:

f(-4) = (-4)^3 - 6(-4)^2 - 63(-4) + 2 = -102

f(0) = 0^3 - 6(0)^2 - 63(0) + 2 = 2

f(-3) = (-3)^3 - 6(-3)^2 - 63(-3) + 2 = -20

f(7) = (7)^3 - 6(7)^2 - 63(7) + 2 = -532

The absolute maximum value is the highest value among these: 2

The absolute minimum value is the lowest value among these: -532

Therefore, for the interval [-4, 0]:

Absolute maximum = 2

Absolute minimum = -532

(b) Interval = [-1, 8]

1. We already found the critical points in the previous step, which are x = -3 and x = 7.

2. Now, we evaluate the function at the critical points and endpoints of the interval:

f(-1) = (-1)^3 - 6(-1)^2 - 63(-1) + 2 = 70

f(8) = (8)^3 - 6(8)^2 - 63(8) + 2 = -254

The absolute maximum value is the highest value among these: 70

The absolute minimum value is the lowest value among these: -254

Therefore, for the interval [-1, 8]:

Absolute maximum = 70

Absolute minimum = -254

(c) Interval = [-4, 8]

1. Again, the critical points are x = -3 and x = 7.

2. Evaluating the function at the critical points and endpoints:

f(-4) = (-4)^3 - 6(-4)^2 - 63(-4) + 2 = -486

f(8) = (8)^3 - 6(8)^2 - 63(8) + 2 = -254

The absolute maximum value is the highest value among these: -254

The absolute minimum value is the lowest value among these: -486

Therefore, for the interval [-4, 8]:

Absolute maximum = -254

Absolute minimum = -486

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