31. An alternative derivation of the surface area formula Assume f is smooth on [a, b] and partition [a, b] in the usual way. In the kth subinterval [Xx-1, Xx], construct the tangent line to the curve at the midpoint m = (xg-1 + xx)/2, as in the accompany- ing figure. a. Show that Δx. n = f(m;) – f'(m;) and n = f(m;) + f'(m;). Δxε b. Show that the length Lỵ of the tangent line segment in the kth subinterval is Lį = V(Ax)² + (f"(m²) Ax4)². y = f(x) r2 х Xk-1 тe -Ax
31. An alternative derivation of the surface area formula Assume f is smooth on [a, b] and partition [a, b] in the usual way. In the kth subinterval [Xx-1, Xx], construct the tangent line to the curve at the midpoint m = (xg-1 + xx)/2, as in the accompany- ing figure. a. Show that Δx. n = f(m;) – f'(m;) and n = f(m;) + f'(m;). Δxε b. Show that the length Lỵ of the tangent line segment in the kth subinterval is Lį = V(Ax)² + (f"(m²) Ax4)². y = f(x) r2 х Xk-1 тe -Ax
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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