6.1.1. (a) Let I = [0,1], let P = {0, 1/2, 1}, let P' P" be the common refinement of P and P'. What are the subintervals of P, and what are their lengths? Same question for P'. Same question for P". (b) Let B = I × I, let Q = P × {0, 1/2, 1}, let Q' = P' × {0,1/2, 1}, and let Q" be the common refinement of Q and Q'. What are the subboxes of Q and what are their areas? Same question for Q'. Same question for Q". {0, 3/8, 5/8, 1}, and let

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
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Chapter6: The Trigonometric Functions
Section6.4: Values Of The Trigonometric Functions
Problem 21E
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Prove Pb. 6.1.1

6.1.1. (a) Let I = [0, 1], let P
P" be the common refinement of P and P'. What are the subintervals of P,
and what are their lengths? Same question for P'. Same question for P".
(b) Let B = I × I, let Q = P × {0, 1/2, 1}, let Q' = P' × {0,1/2, 1}, and
let Q" be the common refinement of Q and Q'. What are the subboxes of Q
and what are their areas? Same question for Q'. Same question for Q".
{0, 1/2, 1}, let P'
{0, 3/8, 5/8, 1}, and let
%3D
6.1.2. Show that the lengths of the subintervals of every partition of [a, b]
sum to the length of [a, b]. Same for the areas of the subboxes of [a, b] x [c, d].
Generalize to R".
6.1.3. Let J =
[0, 1]. Compute mj(f) and MJ(f) for each of the following
functions f :J → R.
(a) f(x) = x(1 – x),
if x is irrational,
(b) f(x) =
|1/m if x = n/m in lowest terms, n, m E Z and m > 0,
S(1 – x) sin(1/x) if x + 0,
(c) f(x) =
if x = 0.
Transcribed Image Text:6.1.1. (a) Let I = [0, 1], let P P" be the common refinement of P and P'. What are the subintervals of P, and what are their lengths? Same question for P'. Same question for P". (b) Let B = I × I, let Q = P × {0, 1/2, 1}, let Q' = P' × {0,1/2, 1}, and let Q" be the common refinement of Q and Q'. What are the subboxes of Q and what are their areas? Same question for Q'. Same question for Q". {0, 1/2, 1}, let P' {0, 3/8, 5/8, 1}, and let %3D 6.1.2. Show that the lengths of the subintervals of every partition of [a, b] sum to the length of [a, b]. Same for the areas of the subboxes of [a, b] x [c, d]. Generalize to R". 6.1.3. Let J = [0, 1]. Compute mj(f) and MJ(f) for each of the following functions f :J → R. (a) f(x) = x(1 – x), if x is irrational, (b) f(x) = |1/m if x = n/m in lowest terms, n, m E Z and m > 0, S(1 – x) sin(1/x) if x + 0, (c) f(x) = if x = 0.
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