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Multiple Choice
Which of the following could be a turning point for the continuous function ?
A
B
C
D
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Verified step by step guidance
1
Step 1: Understand the concept of a turning point. A turning point occurs where the derivative of the function, f'(x), equals zero or is undefined, and the function changes direction (from increasing to decreasing or vice versa). This is typically associated with local maxima or minima.
Step 2: To determine if a given x-value is a turning point, calculate the derivative of the function, f'(x), and evaluate it at the given x-values. Check if f'(x) = 0 or is undefined at these points.
Step 3: After identifying where f'(x) = 0 or is undefined, analyze the behavior of the function around these points. Use the second derivative test or analyze the sign change of f'(x) to confirm if the function changes direction at these points.
Step 4: Apply this process to each of the given x-values (x = 5, x = -2, x = 0, x = 10). Check if f'(x) = 0 or is undefined at these points and confirm if the function changes direction.
Step 5: Based on the analysis, identify which x-values correspond to turning points. Remember, not all points where f'(x) = 0 or is undefined are turning points; the function must also change direction at these points.