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find every point cc in the interval [−2,0] at which f(x)=9x3 takes on its average value. separate multiple answers with a comma. write the exact answer. do not round.

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Answer:

the exact answer is x = -∛2.

Explanation:

The average value of a function over an interval [a, b] is given by:

Avg = (1 / (b - a)) * ∫[a to b] f(x) dx

In this case, the interval is [−2, 0], so a = -2 and b = 0.

Avg = (1 / (0 - (-2))) * ∫[-2 to 0] (9x^3) dx

= (1 / 2) * ∫[-2 to 0] (9x^3) dx

= (1 / 2) * [9/4 * x^4] | [-2 to 0]

= (1 / 2) * (9/4 * (0^4 - (-2)^4))

= (1 / 2) * (9/4 * (0 - 16))

= (1 / 2) * (9/4 * (-16))

= (1 / 2) * (-36)

= -18

The average value of f(x) = 9x^3 over the interval [-2, 0] is -18.

Now, we need to find the points in the interval where the function takes on this average value of -18.

Setting f(x) = -18, we have:

9x^3 = -18

Dividing both sides by 9:

x^3 = -2

Taking the cube root of both sides:

x = -∛2

Therefore, the point cc in the interval [-2, 0] where f(x) = 9x^3 takes on its average value of -18 is x = -∛2.

i hope i helped!

User Ashwin H
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