The area between a curve y = f(x) and the x-axis where a

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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how did the example problem find the limits for integration

x = a(t - sin t), y = 6a(1 - cost)
The area between a curve y = f(x) and the x-axis where a <x<b is the integral of y with respect to x from a to b. This integral can be rewritten for a parametric
curve as shown.
b
A= S
a
S f(x)
dx
Sy
dx
y(t) dt dt
To perform the substitution, find and the limits for t since y(t) is given. First differentiate x(t) with respect to t.
dx
dt
dt (a(t-sin t)) = a(1– cost)
Now find the limits for integration with respect to t. The limits for x are shown.
0≤x≤2a+
Transcribed Image Text:x = a(t - sin t), y = 6a(1 - cost) The area between a curve y = f(x) and the x-axis where a <x<b is the integral of y with respect to x from a to b. This integral can be rewritten for a parametric curve as shown. b A= S a S f(x) dx Sy dx y(t) dt dt To perform the substitution, find and the limits for t since y(t) is given. First differentiate x(t) with respect to t. dx dt dt (a(t-sin t)) = a(1– cost) Now find the limits for integration with respect to t. The limits for x are shown. 0≤x≤2a+
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