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Given the cube root function (g(x) = √[3]x+8 - 4), find the root, y-intercept, and inflection point.

a) Root: -8, Y-intercept: (0, -4), Inflection Point: Not specified
b) Root: -8, Y-intercept: Not specified, Inflection Point: (0, -4)
c) Root: Not specified, Y-intercept: (0, -4), Inflection Point: -8
d) Root: Not specified, Y-intercept: -8, Inflection Point: (0, -4)

1 Answer

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Final answer:

For the cube root function g(x) = ∛[3]{x+8} - 4, the root occurs at x=56, the y-intercept is at (0, -2), and there is no specified inflection point as the function's rate of change of slope is constant.

Step-by-step explanation:

Finding the Root, Y-Intercept, and Inflection Point of a Cube Root Function

To find the characteristics of the cube root function g(x) = ∛[3]{x+8} - 4, we need to examine its formula. The root of the function is the value of x for which g(x) = 0. Setting the function equal to zero and solving:

0 = ∛[3]{x+8} - 4

4 = ∛[3]{x+8}

64 = x + 8

x = 56

The y-intercept is found by setting x to 0 and evaluating the function:

g(0) = ∛[3]{0+8} - 4

g(0) = ∛[3]{8} - 4

g(0) = 2 - 4

g(0) = -2

Thus, the y-intercept is (0, -2).

The inflection point typically occurs where the second derivative changes sign; however, for the cube root function, an inflection point doesn't exist because the rate of change of the slope is constant.

Therefore, the correct answers are: Root: 56, Y-intercept: (0, -2), and no specified Inflection Point.

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