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Set up an integral that represents the volume of the solid obtained by rotating the region bound by the given curves about the specified axis. Do not evaluate the integrals.

a) y = 0, y = x² - 2 about the x-axis

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Final answer:

The volume of the solid obtained by rotating the region bound by y = 0 and y = x² - 2 about the x-axis is found by setting up an integral using the disk method. The limits of integration are the points where the parabola intersects the x-axis, which are -√2 and √2. The integral for the volume is ∫_-√2²√2 (x² - 2)² dx.

Step-by-step explanation:

To set up an integral that represents the volume of the solid obtained by rotating the region bounded by the curves y = 0 and y = x² - 2 about the x-axis, we use the disk method. The volume V can be expressed as:

V = ∫ᵽᵥ(x)² dx

Where ᵽᵥ(x) is the radius of the disk at a particular value of x, which is given by the equation y = x² - 2. The region of integration is from where the parabola intersects the x-axis. To find these intersection points, we set y to 0 and solve for x:

0 = x² - 2
x = √2, -√2

Thus, the limits of integration are from -√2 to √2. The integral that represents the volume is:

V = ∫_-√2²√2 (x² - 2)² dx

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