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Multiple Choice
For the curve , at what point does the curve have maximum curvature?
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Verified step by step guidance
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Step 1: Recall the formula for curvature, κ, of a curve y = f(x). The curvature is given by κ = |f''(x)| / (1 + (f'(x))²)^(3/2). This formula will help us determine the curvature of the given curve y = 5 ln(x).
Step 2: Compute the first derivative of y = 5 ln(x). Using the derivative rule for natural logarithms, f'(x) = d/dx[5 ln(x)] = 5/x.
Step 3: Compute the second derivative of y = 5 ln(x). Using the derivative rule for 1/x, f''(x) = d/dx[5/x] = -5/x².
Step 4: Substitute f'(x) = 5/x and f''(x) = -5/x² into the curvature formula κ = |f''(x)| / (1 + (f'(x))²)^(3/2). Simplify the expression for κ in terms of x.
Step 5: Analyze the expression for κ to find the value of x that maximizes the curvature. This involves finding the critical points of κ by taking its derivative with respect to x and solving for x. Compare the curvature values at x = 2, x = e, x = 1, and x = 5 to determine the maximum curvature.