a. The graph y = f(x) in the xy-plane automatically has the parametrization x = x, y = f(x), and the vector formula r(x) = xi + f(x)j. Use this formula to show that if f is a twice-differentiable function of x, then |f"(x)| [1 + (f'(x))²]3/2" K(x) = b. Use the formula for k in part (a) to find the curvature of y = In (cos x), – 7/2
a. The graph y = f(x) in the xy-plane automatically has the parametrization x = x, y = f(x), and the vector formula r(x) = xi + f(x)j. Use this formula to show that if f is a twice-differentiable function of x, then |f"(x)| [1 + (f'(x))²]3/2" K(x) = b. Use the formula for k in part (a) to find the curvature of y = In (cos x), – 7/2
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section: Chapter Questions
Problem 18T
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A formula for the curvature of the graph of a function in the xy-plane
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