Given the figure showing four curves labeled A, B, C, and D, which represent the functions , , , and , respectively, which curve corresponds to ?
A
The curve that matches
B
The curve that matches
C
The curve that matches
D
The curve that matches
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1
Step 1: Begin by recalling the derivatives of the sine function. The first derivative of f(x) = sin(x) is f'(x) = cos(x). The second derivative, f''(x), is the derivative of f'(x), which is f''(x) = -sin(x).
Step 2: Understand the relationship between the function and its derivatives. The second derivative, f''(x), represents the rate of change of the slope of the original function f(x). For f(x) = sin(x), f''(x) = -sin(x) indicates that the curve oscillates in the opposite direction of the original sine function.
Step 3: Analyze the given curves in the figure. Look for the curve that matches the behavior of -sin(x). This curve should have the same shape as sin(x) but inverted, meaning it peaks where sin(x) dips and dips where sin(x) peaks.
Step 4: Compare the curves labeled A, B, C, and D to identify which one corresponds to -sin(x). Pay attention to the amplitude, frequency, and phase of the oscillations to ensure the match.
Step 5: Once the curve corresponding to -sin(x) is identified, confirm that it is labeled as f''(x) in the figure. This ensures consistency with the mathematical relationship between the function and its derivatives.