Precalculus
11th Edition
ISBN: 9780135189405
Author: Michael Sullivan
Publisher: PEARSON
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Question
Chapter A.9, Problem 114AYU
To determine
The values of
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Total marks 15
Total marks
on paper: 80
6.
Let DCR2 be a bounded domain with the boundary ǝD which
can be represented as a smooth closed curve : [a, b] → R², oriented in
the anticlockwise direction.
(i) Use Green's Theorem to justify that the area of the domain
D can be computed by the formula
1
Area(D)
=
.
[5 Marks]
(ii)
Use the area formula in (i) to find the area of the domain
D enclosed by the ellipse
(t) = (5 cos(t), 10 sin(t)), t = [0,2π].
[5 Marks]
(iii)
Explain in your own words why Green's Theorem can not
be applied to the vector field
У
x
F(x,y) = ( - x² + y²²x² + y² ).
[5 Marks]
Total marks 15
པ་
(i) Sketch the trace of the following curve on R2,
(t) = (t2 cos(t), t² sin(t)),
t = [0,2π].
[3 Marks]
(ii)
Find the length of this curve.
(iii)
[7 Marks]
Give a parametric representation of a curve : [0,
that has initial point (1,0), final point (0, 1) and the length √2.
→ R²
[5 Marks]
Turn over.
MA-201: Page 4 of 5
Total marks 15
5.
(i)
Let f R2 R be defined by
f(x1, x2) = x² - 4x1x2 + 2x3.
Find all local minima of f on R².
(ii)
[10 Marks]
Give an example of a function f: R2 R which is not bounded
above and has exactly one critical point, which is a minimum. Justify briefly
your answer.
[5 Marks]
6.
(i)
Sketch the trace of the following curve on R2,
y(t) = (sin(t), 3 sin(t)), t = [0,π].
[3 Marks]
Chapter A Solutions
Precalculus
Ch. A.1 - Prob. 1AYUCh. A.1 - Prob. 2AYUCh. A.1 - Prob. 3AYUCh. A.1 - Prob. 4AYUCh. A.1 - Prob. 5AYUCh. A.1 - Prob. 6AYUCh. A.1 - Prob. 7AYUCh. A.1 - Prob. 8AYUCh. A.1 - Prob. 9AYUCh. A.1 - Prob. 10AYU
Ch. A.1 - Prob. 11AYUCh. A.1 - Prob. 12AYUCh. A.1 - Prob. 13AYUCh. A.1 - Prob. 14AYUCh. A.1 - Prob. 15AYUCh. A.1 - Prob. 16AYUCh. A.1 - Prob. 17AYUCh. A.1 - Prob. 18AYUCh. A.1 - Prob. 19AYUCh. A.1 - Prob. 20AYUCh. A.1 - Prob. 21AYUCh. A.1 - Prob. 22AYUCh. A.1 - Prob. 23AYUCh. A.1 - Prob. 24AYUCh. A.1 - Prob. 25AYUCh. A.1 - Prob. 26AYUCh. A.1 - Prob. 27AYUCh. A.1 - Prob. 28AYUCh. A.1 - Prob. 29AYUCh. A.1 - Prob. 30AYUCh. A.1 - Prob. 31AYUCh. A.1 - Prob. 32AYUCh. A.1 - Prob. 33AYUCh. A.1 - Prob. 34AYUCh. A.1 - Prob. 35AYUCh. A.1 - Prob. 36AYUCh. A.1 - Prob. 37AYUCh. A.1 - Prob. 38AYUCh. A.1 - Prob. 39AYUCh. A.1 - Prob. 40AYUCh. A.1 - Prob. 41AYUCh. A.1 - Prob. 42AYUCh. A.1 - Prob. 43AYUCh. A.1 - Prob. 44AYUCh. A.1 - Prob. 45AYUCh. A.1 - Prob. 46AYUCh. A.1 - Prob. 47AYUCh. A.1 - Prob. 48AYUCh. A.1 - Prob. 49AYUCh. A.1 - Prob. 50AYUCh. A.1 - Prob. 51AYUCh. A.1 - Prob. 52AYUCh. A.1 - Prob. 53AYUCh. A.1 - Prob. 54AYUCh. A.1 - Prob. 55AYUCh. A.1 - Prob. 56AYUCh. A.1 - Prob. 57AYUCh. A.1 - Prob. 58AYUCh. A.1 - Prob. 59AYUCh. A.1 - Prob. 60AYUCh. A.1 - Prob. 61AYUCh. A.1 - Prob. 62AYUCh. A.1 - Prob. 63AYUCh. A.1 - Prob. 64AYUCh. A.1 - Prob. 65AYUCh. A.1 - Prob. 66AYUCh. A.1 - Prob. 67AYUCh. A.1 - Prob. 68AYUCh. A.1 - Prob. 69AYUCh. A.1 - Prob. 70AYUCh. A.1 - Prob. 71AYUCh. A.1 - Prob. 72AYUCh. A.1 - Prob. 73AYUCh. A.1 - Prob. 74AYUCh. A.1 - Prob. 75AYUCh. A.1 - Prob. 76AYUCh. A.1 - Prob. 77AYUCh. A.1 - Prob. 78AYUCh. A.1 - Prob. 79AYUCh. A.1 - Prob. 80AYUCh. A.1 - Prob. 81AYUCh. A.1 - Prob. 82AYUCh. A.1 - Prob. 83AYUCh. A.1 - Prob. 84AYUCh. A.1 - Prob. 85AYUCh. A.1 - Prob. 86AYUCh. A.1 - Prob. 87AYUCh. A.1 - Prob. 88AYUCh. A.1 - Prob. 89AYUCh. A.1 - Prob. 90AYUCh. A.1 - Prob. 91AYUCh. A.1 - Prob. 92AYUCh. A.1 - Prob. 93AYUCh. A.1 - Prob. 94AYUCh. A.1 - Prob. 95AYUCh. A.1 - Prob. 96AYUCh. A.1 - Prob. 97AYUCh. A.1 - Prob. 98AYUCh. A.1 - Prob. 99AYUCh. A.1 - Prob. 100AYUCh. A.1 - Prob. 101AYUCh. A.1 - Prob. 102AYUCh. A.1 - Prob. 103AYUCh. A.1 - Prob. 104AYUCh. A.1 - Prob. 105AYUCh. A.1 - Prob. 106AYUCh. A.1 - Prob. 107AYUCh. A.1 - Prob. 108AYUCh. A.1 - Prob. 109AYUCh. A.1 - Prob. 110AYUCh. A.1 - Prob. 111AYUCh. A.1 - Prob. 112AYUCh. A.1 - Prob. 113AYUCh. A.1 - Prob. 114AYUCh. A.1 - Prob. 115AYUCh. A.1 - Prob. 116AYUCh. A.1 - Prob. 117AYUCh. A.1 - Prob. 118AYUCh. A.1 - Prob. 119AYUCh. A.1 - Prob. 120AYUCh. A.1 - Prob. 121AYUCh. A.1 - Prob. 122AYUCh. A.1 - Prob. 123AYUCh. A.1 - Prob. 124AYUCh. A.1 - Prob. 125AYUCh. A.1 - Prob. 126AYUCh. A.1 - Prob. 127AYUCh. A.1 - Prob. 128AYUCh. A.1 - Prob. 129AYUCh. A.1 - Prob. 130AYUCh. A.1 - Prob. 131AYUCh. A.1 - Prob. 132AYUCh. A.1 - Prob. 133AYUCh. A.1 - Prob. 134AYUCh. A.1 - Prob. 135AYUCh. A.1 - Prob. 136AYUCh. A.1 - Prob. 137AYUCh. A.1 - Prob. 138AYUCh. A.1 - Prob. 139AYUCh. A.1 - Prob. 140AYUCh. A.1 - Prob. 141AYUCh. A.1 - Prob. 142AYUCh. A.1 - Prob. 143AYUCh. A.1 - Prob. 144AYUCh. A.1 - Prob. 145AYUCh. A.1 - Prob. 146AYUCh. A.1 - Prob. 147AYUCh. A.1 - Prob. 148AYUCh. A.1 - Prob. 149AYUCh. A.1 - Prob. 150AYUCh. A.1 - Prob. 151AYUCh. A.1 - Prob. 152AYUCh. A.1 - Prob. 153AYUCh. A.1 - Prob. 154AYUCh. A.2 - Prob. 1AYUCh. A.2 - Prob. 2AYUCh. A.2 - Prob. 3AYUCh. A.2 - Prob. 4AYUCh. A.2 - Prob. 5AYUCh. A.2 - Prob. 6AYUCh. A.2 - Prob. 7AYUCh. A.2 - Prob. 8AYUCh. A.2 - Prob. 9AYUCh. A.2 - Prob. 10AYUCh. A.2 - Prob. 11AYUCh. A.2 - Prob. 12AYUCh. A.2 - Prob. 13AYUCh. A.2 - Prob. 14AYUCh. A.2 - Prob. 15AYUCh. A.2 - Prob. 16AYUCh. A.2 - Prob. 17AYUCh. A.2 - Prob. 18AYUCh. A.2 - Prob. 19AYUCh. A.2 - Prob. 20AYUCh. A.2 - Prob. 21AYUCh. A.2 - Prob. 22AYUCh. A.2 - Prob. 23AYUCh. A.2 - Prob. 24AYUCh. A.2 - Prob. 25AYUCh. A.2 - Prob. 26AYUCh. A.2 - Prob. 27AYUCh. A.2 - Prob. 28AYUCh. A.2 - Prob. 29AYUCh. A.2 - Prob. 30AYUCh. A.2 - Prob. 31AYUCh. A.2 - Prob. 32AYUCh. A.2 - Prob. 33AYUCh. A.2 - Prob. 34AYUCh. A.2 - Prob. 35AYUCh. A.2 - Prob. 36AYUCh. A.2 - Prob. 37AYUCh. A.2 - Prob. 38AYUCh. A.2 - Prob. 39AYUCh. A.2 - Prob. 40AYUCh. A.2 - Prob. 41AYUCh. A.2 - Prob. 42AYUCh. A.2 - Prob. 43AYUCh. A.2 - Prob. 44AYUCh. A.2 - Prob. 45AYUCh. A.2 - Prob. 46AYUCh. A.2 - Prob. 47AYUCh. A.2 - Prob. 48AYUCh. A.2 - Prob. 49AYUCh. A.2 - Prob. 50AYUCh. A.2 - Prob. 51AYUCh. A.2 - Prob. 52AYUCh. A.2 - Prob. 53AYUCh. A.2 - Prob. 54AYUCh. A.2 - Prob. 55AYUCh. A.2 - Prob. 56AYUCh. A.2 - Prob. 57AYUCh. A.2 - Prob. 58AYUCh. A.2 - Prob. 59AYUCh. A.2 - Prob. 60AYUCh. A.2 - Prob. 61AYUCh. A.2 - Prob. 62AYUCh. A.3 - Prob. 1AYUCh. A.3 - Prob. 2AYUCh. A.3 - Prob. 3AYUCh. A.3 - Prob. 4AYUCh. A.3 - Prob. 5AYUCh. A.3 - Prob. 6AYUCh. A.3 - Prob. 7AYUCh. A.3 - Prob. 8AYUCh. A.3 - Prob. 9AYUCh. A.3 - Prob. 10AYUCh. A.3 - Prob. 11AYUCh. A.3 - Prob. 12AYUCh. A.3 - Prob. 13AYUCh. A.3 - Prob. 14AYUCh. A.3 - Prob. 15AYUCh. A.3 - Prob. 16AYUCh. A.3 - Prob. 17AYUCh. A.3 - Prob. 18AYUCh. A.3 - Prob. 19AYUCh. A.3 - Prob. 20AYUCh. A.3 - Prob. 21AYUCh. A.3 - Prob. 22AYUCh. A.3 - Prob. 23AYUCh. A.3 - Prob. 24AYUCh. A.3 - Prob. 25AYUCh. A.3 - Prob. 26AYUCh. A.3 - Prob. 27AYUCh. A.3 - Prob. 28AYUCh. A.3 - Prob. 29AYUCh. A.3 - Prob. 30AYUCh. A.3 - Prob. 31AYUCh. A.3 - Prob. 32AYUCh. A.3 - Prob. 33AYUCh. A.3 - Prob. 34AYUCh. A.3 - Prob. 35AYUCh. A.3 - Prob. 36AYUCh. A.3 - Prob. 37AYUCh. A.3 - Prob. 38AYUCh. A.3 - Prob. 39AYUCh. A.3 - Prob. 40AYUCh. A.3 - Prob. 41AYUCh. A.3 - Prob. 42AYUCh. A.3 - Prob. 43AYUCh. A.3 - Prob. 44AYUCh. A.3 - Prob. 45AYUCh. A.3 - Prob. 46AYUCh. A.3 - Prob. 47AYUCh. A.3 - Prob. 48AYUCh. A.3 - Prob. 49AYUCh. A.3 - Prob. 50AYUCh. A.3 - Prob. 51AYUCh. A.3 - Prob. 52AYUCh. A.3 - Prob. 53AYUCh. A.3 - Prob. 54AYUCh. A.3 - Prob. 55AYUCh. A.3 - Prob. 56AYUCh. A.3 - Prob. 57AYUCh. A.3 - Prob. 58AYUCh. A.3 - Prob. 59AYUCh. A.3 - Prob. 60AYUCh. A.3 - Prob. 61AYUCh. A.3 - Prob. 62AYUCh. A.3 - Prob. 63AYUCh. A.3 - Prob. 64AYUCh. A.3 - Prob. 65AYUCh. A.3 - Prob. 66AYUCh. A.3 - Prob. 67AYUCh. A.3 - Prob. 68AYUCh. A.3 - Prob. 69AYUCh. A.3 - Prob. 70AYUCh. A.3 - Prob. 71AYUCh. A.3 - Prob. 72AYUCh. A.3 - Prob. 73AYUCh. A.3 - Prob. 74AYUCh. A.3 - Prob. 75AYUCh. A.3 - Prob. 76AYUCh. A.3 - Prob. 77AYUCh. A.3 - Prob. 78AYUCh. A.3 - Prob. 79AYUCh. A.3 - Prob. 80AYUCh. A.3 - Prob. 81AYUCh. A.3 - Prob. 82AYUCh. A.3 - Prob. 83AYUCh. A.3 - Prob. 84AYUCh. A.3 - Prob. 85AYUCh. A.3 - Prob. 86AYUCh. A.3 - Prob. 87AYUCh. A.3 - Prob. 88AYUCh. A.3 - Prob. 89AYUCh. A.3 - Prob. 90AYUCh. A.3 - Prob. 91AYUCh. A.3 - Prob. 92AYUCh. A.3 - Prob. 93AYUCh. A.3 - Prob. 94AYUCh. A.3 - Prob. 95AYUCh. A.3 - Prob. 96AYUCh. A.3 - Prob. 97AYUCh. A.3 - Prob. 98AYUCh. A.3 - Prob. 99AYUCh. A.3 - Prob. 100AYUCh. A.3 - Prob. 101AYUCh. A.3 - Prob. 102AYUCh. A.3 - Prob. 103AYUCh. A.3 - Prob. 104AYUCh. A.3 - Prob. 105AYUCh. A.3 - Prob. 106AYUCh. A.3 - Prob. 107AYUCh. A.3 - Prob. 108AYUCh. A.3 - Prob. 109AYUCh. A.3 - Prob. 110AYUCh. A.3 - Prob. 111AYUCh. A.3 - Prob. 112AYUCh. A.3 - Prob. 113AYUCh. A.3 - Prob. 114AYUCh. A.3 - Prob. 115AYUCh. A.3 - Prob. 116AYUCh. A.3 - Prob. 117AYUCh. A.3 - Prob. 118AYUCh. A.3 - Prob. 119AYUCh. A.3 - Prob. 120AYUCh. A.3 - Prob. 121AYUCh. A.3 - Prob. 122AYUCh. A.3 - Prob. 123AYUCh. A.3 - Prob. 124AYUCh. A.3 - Prob. 125AYUCh. A.3 - Prob. 126AYUCh. A.3 - Prob. 127AYUCh. A.3 - Prob. 128AYUCh. A.3 - Prob. 129AYUCh. A.3 - Prob. 130AYUCh. A.3 - Prob. 131AYUCh. A.3 - Prob. 132AYUCh. A.3 - Prob. 133AYUCh. A.3 - Prob. 134AYUCh. A.3 - Prob. 135AYUCh. A.3 - Prob. 136AYUCh. A.3 - Prob. 137AYUCh. A.3 - Prob. 138AYUCh. A.3 - Prob. 139AYUCh. A.3 - Prob. 140AYUCh. A.3 - Prob. 141AYUCh. A.3 - Prob. 142AYUCh. A.3 - Prob. 143AYUCh. A.3 - Prob. 144AYUCh. A.3 - Prob. 145AYUCh. A.3 - Prob. 146AYUCh. A.3 - Prob. 147AYUCh. A.3 - Prob. 148AYUCh. A.4 - Prob. 1AYUCh. A.4 - Prob. 2AYUCh. A.4 - Prob. 3AYUCh. A.4 - Prob. 4AYUCh. A.4 - Prob. 5AYUCh. A.4 - Prob. 6AYUCh. A.4 - Prob. 7AYUCh. A.4 - Prob. 8AYUCh. A.4 - Prob. 9AYUCh. A.4 - Prob. 10AYUCh. A.4 - Prob. 11AYUCh. A.4 - Prob. 12AYUCh. A.4 - Prob. 13AYUCh. A.4 - Prob. 14AYUCh. A.4 - Prob. 15AYUCh. A.4 - Prob. 16AYUCh. A.4 - Prob. 17AYUCh. A.4 - Prob. 18AYUCh. A.4 - Prob. 19AYUCh. A.4 - Prob. 20AYUCh. A.4 - Prob. 21AYUCh. A.4 - Prob. 22AYUCh. A.4 - Prob. 23AYUCh. A.4 - Prob. 24AYUCh. A.4 - Prob. 25AYUCh. A.4 - Prob. 26AYUCh. A.4 - Prob. 27AYUCh. A.4 - Prob. 28AYUCh. A.4 - Prob. 29AYUCh. A.4 - Prob. 30AYUCh. A.5 - Prob. 1AYUCh. A.5 - Prob. 2AYUCh. A.5 - Prob. 3AYUCh. A.5 - Prob. 4AYUCh. A.5 - Prob. 5AYUCh. A.5 - Prob. 6AYUCh. A.5 - Prob. 7AYUCh. A.5 - Prob. 8AYUCh. A.5 - Prob. 9AYUCh. A.5 - Prob. 10AYUCh. A.5 - Prob. 11AYUCh. A.5 - Prob. 12AYUCh. A.5 - Prob. 13AYUCh. A.5 - Prob. 14AYUCh. A.5 - Prob. 15AYUCh. A.5 - Prob. 16AYUCh. A.5 - Prob. 17AYUCh. A.5 - Prob. 18AYUCh. A.5 - Prob. 19AYUCh. A.5 - Prob. 20AYUCh. A.5 - Prob. 21AYUCh. A.5 - Prob. 22AYUCh. A.5 - Prob. 23AYUCh. A.5 - Prob. 24AYUCh. A.5 - Prob. 25AYUCh. A.5 - Prob. 26AYUCh. A.5 - Prob. 27AYUCh. A.5 - Prob. 28AYUCh. A.5 - Prob. 29AYUCh. A.5 - Prob. 30AYUCh. A.5 - Prob. 31AYUCh. A.5 - Prob. 32AYUCh. A.5 - Prob. 33AYUCh. A.5 - Prob. 34AYUCh. A.5 - Prob. 35AYUCh. A.5 - Prob. 36AYUCh. A.5 - Prob. 37AYUCh. A.5 - Prob. 38AYUCh. A.5 - Prob. 39AYUCh. A.5 - Prob. 40AYUCh. A.5 - Prob. 41AYUCh. A.5 - Prob. 42AYUCh. A.5 - Prob. 43AYUCh. A.5 - Prob. 44AYUCh. A.5 - Prob. 45AYUCh. A.5 - Prob. 46AYUCh. A.5 - Prob. 47AYUCh. A.5 - Prob. 48AYUCh. A.5 - Prob. 49AYUCh. A.6 - Factor:
Ch. A.6 - Prob. 2AYUCh. A.6 - Prob. 3AYUCh. A.6 - Prob. 4AYUCh. A.6 - Prob. 5AYUCh. A.6 - Prob. 6AYUCh. A.6 - Prob. 7AYUCh. A.6 - To solve the equation by completing the square,...Ch. A.6 - Prob. 9AYUCh. A.6 - Prob. 10AYUCh. A.6 - Prob. 11AYUCh. A.6 - Prob. 12AYUCh. A.6 - Prob. 13AYUCh. A.6 - Prob. 14AYUCh. A.6 - Prob. 15AYUCh. A.6 - Prob. 16AYUCh. A.6 - Prob. 17AYUCh. A.6 - Prob. 18AYUCh. A.6 - Prob. 19AYUCh. A.6 - Prob. 20AYUCh. A.6 - Prob. 21AYUCh. A.6 - Prob. 22AYUCh. A.6 - Prob. 23AYUCh. A.6 - Prob. 24AYUCh. A.6 - Prob. 25AYUCh. A.6 - Prob. 26AYUCh. A.6 - Prob. 27AYUCh. A.6 - Prob. 28AYUCh. A.6 - Prob. 29AYUCh. A.6 - Prob. 30AYUCh. A.6 - Prob. 31AYUCh. A.6 - Prob. 32AYUCh. A.6 - Prob. 33AYUCh. A.6 - Prob. 34AYUCh. A.6 - Prob. 35AYUCh. A.6 - Prob. 36AYUCh. A.6 - Prob. 37AYUCh. A.6 - Prob. 38AYUCh. A.6 - Prob. 39AYUCh. A.6 - Prob. 40AYUCh. A.6 - Prob. 41AYUCh. A.6 - Prob. 42AYUCh. A.6 - Prob. 43AYUCh. A.6 - Prob. 44AYUCh. A.6 - In Problems , solve each equation.
Ch. A.6 - Prob. 46AYUCh. A.6 - Prob. 47AYUCh. A.6 - Prob. 48AYUCh. A.6 - Prob. 49AYUCh. A.6 - Prob. 50AYUCh. A.6 - Prob. 51AYUCh. A.6 - Prob. 52AYUCh. A.6 - Prob. 53AYUCh. A.6 - Prob. 54AYUCh. A.6 - Prob. 55AYUCh. A.6 - Prob. 56AYUCh. A.6 - Prob. 57AYUCh. A.6 - Prob. 58AYUCh. A.6 - Prob. 59AYUCh. A.6 - Prob. 60AYUCh. A.6 - Prob. 61AYUCh. A.6 - Prob. 62AYUCh. A.6 - Prob. 63AYUCh. A.6 - Prob. 64AYUCh. A.6 - Prob. 65AYUCh. A.6 - Prob. 66AYUCh. A.6 - Prob. 67AYUCh. A.6 - Prob. 68AYUCh. A.6 - Prob. 69AYUCh. A.6 - Prob. 70AYUCh. A.6 - Prob. 71AYUCh. A.6 - Prob. 72AYUCh. A.6 - Prob. 73AYUCh. A.6 - Prob. 74AYUCh. A.6 - Prob. 75AYUCh. A.6 - Prob. 76AYUCh. A.6 - Prob. 77AYUCh. A.6 - Prob. 78AYUCh. A.6 - Prob. 79AYUCh. A.6 - Prob. 80AYUCh. A.6 - Prob. 81AYUCh. A.6 - Prob. 82AYUCh. A.6 - Prob. 83AYUCh. A.6 - Prob. 84AYUCh. A.6 - Prob. 85AYUCh. A.6 - Prob. 86AYUCh. A.6 - Prob. 87AYUCh. A.6 - Prob. 88AYUCh. A.6 - Prob. 89AYUCh. A.6 - Prob. 90AYUCh. A.6 - Prob. 91AYUCh. A.6 - Prob. 92AYUCh. A.6 - Prob. 93AYUCh. A.6 - Prob. 94AYUCh. A.6 - Prob. 95AYUCh. A.6 - Prob. 96AYUCh. A.6 - Prob. 97AYUCh. A.6 - Prob. 98AYUCh. A.6 - Prob. 99AYUCh. A.6 - Prob. 100AYUCh. A.6 - Prob. 101AYUCh. A.6 - Prob. 102AYUCh. A.6 - Prob. 103AYUCh. A.6 - Prob. 104AYUCh. A.6 - Prob. 105AYUCh. A.6 - Prob. 106AYUCh. A.6 - Prob. 107AYUCh. A.6 - Prob. 108AYUCh. A.6 - Prob. 109AYUCh. A.6 - Prob. 110AYUCh. A.6 - Prob. 111AYUCh. A.6 - Prob. 112AYUCh. A.6 - Prob. 113AYUCh. A.6 - Prob. 114AYUCh. A.6 - Prob. 115AYUCh. A.6 - Prob. 116AYUCh. A.6 - Prob. 117AYUCh. A.6 - Prob. 118AYUCh. A.6 - Prob. 119AYUCh. A.6 - Prob. 120AYUCh. A.6 - Prob. 121AYUCh. A.6 - Prob. 122AYUCh. A.6 - Prob. 123AYUCh. A.6 - Prob. 124AYUCh. A.6 - Prob. 125AYUCh. A.6 - Prob. 126AYUCh. A.6 - Prob. 127AYUCh. A.6 - Prob. 128AYUCh. A.6 - Prob. 129AYUCh. A.6 - Prob. 130AYUCh. A.6 - Prob. 131AYUCh. A.6 - Prob. 132AYUCh. A.6 - Prob. 133AYUCh. A.6 - Prob. 134AYUCh. A.6 - Prob. 135AYUCh. A.7 - Prob. 1AYUCh. A.7 - Prob. 2AYUCh. A.7 - Prob. 3AYUCh. A.7 - Prob. 4AYUCh. A.7 - Prob. 5AYUCh. A.7 - Prob. 6AYUCh. A.7 - Prob. 7AYUCh. A.7 - Prob. 8AYUCh. A.7 - Prob. 9AYUCh. A.7 - Prob. 10AYUCh. A.7 - Prob. 11AYUCh. A.7 - Prob. 12AYUCh. A.7 - Prob. 13AYUCh. A.7 - Prob. 14AYUCh. A.7 - Prob. 15AYUCh. A.7 - Prob. 16AYUCh. A.7 - Prob. 17AYUCh. A.7 - Prob. 18AYUCh. A.7 - Prob. 19AYUCh. A.7 - Prob. 20AYUCh. A.7 - Prob. 21AYUCh. A.7 - Prob. 22AYUCh. A.7 - Prob. 23AYUCh. A.7 - Prob. 24AYUCh. A.7 - Prob. 25AYUCh. A.7 - Prob. 26AYUCh. A.7 - Prob. 27AYUCh. A.7 - Prob. 28AYUCh. A.7 - Prob. 29AYUCh. A.7 - Prob. 30AYUCh. A.7 - Prob. 31AYUCh. A.7 - Prob. 32AYUCh. A.7 - Prob. 33AYUCh. A.7 - Prob. 34AYUCh. A.7 - Prob. 35AYUCh. A.7 - Prob. 36AYUCh. A.7 - Prob. 37AYUCh. A.7 - Prob. 38AYUCh. A.7 - Prob. 39AYUCh. A.7 - Prob. 40AYUCh. A.7 - Prob. 41AYUCh. A.7 - Prob. 42AYUCh. A.7 - Prob. 43AYUCh. A.7 - Prob. 44AYUCh. A.7 - Prob. 45AYUCh. A.7 - Prob. 46AYUCh. A.7 - Prob. 47AYUCh. A.7 - Prob. 48AYUCh. A.7 - Prob. 49AYUCh. A.7 - Prob. 50AYUCh. 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A.9 - Prob. 126AYUCh. A.9 - Prob. 127AYUCh. A.9 - Prob. 128AYUCh. A.9 - Prob. 129AYUCh. A.9 - Prob. 130AYUCh. A.9 - Prob. 131AYUCh. A.9 - Prob. 132AYUCh. A.9 - Computing Grades In your Economics 101 class, you...Ch. A.9 - Prob. 134AYUCh. A.9 - Prob. 135AYUCh. A.9 - Prob. 136AYUCh. A.9 - Prob. 137AYUCh. A.9 - Prob. 138AYUCh. A.9 - Prob. 139AYUCh. A.9 - Prob. 140AYUCh. A.9 - Prob. 141AYUCh. A.10 - Prob. 1AYUCh. A.10 - Prob. 2AYUCh. A.10 - Prob. 3AYUCh. A.10 - Prob. 4AYUCh. A.10 - Prob. 5AYUCh. A.10 - Prob. 6AYUCh. A.10 - Prob. 7AYUCh. A.10 - Prob. 8AYUCh. A.10 - Prob. 9AYUCh. A.10 - Prob. 10AYUCh. A.10 - Prob. 11AYUCh. A.10 - Prob. 12AYUCh. A.10 - Prob. 13AYUCh. A.10 - Prob. 14AYUCh. A.10 - Prob. 15AYUCh. A.10 - Prob. 16AYUCh. A.10 - Prob. 17AYUCh. A.10 - Prob. 18AYUCh. A.10 - Prob. 19AYUCh. A.10 - Prob. 20AYUCh. A.10 - Prob. 21AYUCh. A.10 - Prob. 22AYUCh. A.10 - Prob. 23AYUCh. A.10 - Prob. 24AYUCh. A.10 - Prob. 25AYUCh. A.10 - Prob. 26AYUCh. A.10 - Prob. 27AYUCh. A.10 - Prob. 28AYUCh. 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- A ladder 25 feet long is leaning against the wall of a building. Initially, the foot of the ladder is 7 feet from the wall. The foot of the ladder begins to slide at a rate of 2 ft/sec, causing the top of the ladder to slide down the wall. The location of the foot of the ladder, its x coordinate, at time t seconds is given by x(t)=7+2t. wall y(1) 25 ft. ladder x(1) ground (a) Find the formula for the location of the top of the ladder, the y coordinate, as a function of time t. The formula for y(t)= √ 25² - (7+2t)² (b) The domain of t values for y(t) ranges from 0 (c) Calculate the average velocity of the top of the ladder on each of these time intervals (correct to three decimal places): . (Put your cursor in the box, click and a palette will come up to help you enter your symbolic answer.) time interval ave velocity [0,2] -0.766 [6,8] -3.225 time interval ave velocity -1.224 -9.798 [2,4] [8,9] (d) Find a time interval [a,9] so that the average velocity of the top of the ladder on this…arrow_forwardTotal marks 15 3. (i) Let FRN Rm be a mapping and x = RN is a given point. Which of the following statements are true? Construct counterex- amples for any that are false. (a) If F is continuous at x then F is differentiable at x. (b) If F is differentiable at x then F is continuous at x. If F is differentiable at x then F has all 1st order partial (c) derivatives at x. (d) If all 1st order partial derivatives of F exist and are con- tinuous on RN then F is differentiable at x. [5 Marks] (ii) Let mappings F= (F1, F2) R³ → R² and G=(G1, G2) R² → R² : be defined by F₁ (x1, x2, x3) = x1 + x², G1(1, 2) = 31, F2(x1, x2, x3) = x² + x3, G2(1, 2)=sin(1+ y2). By using the chain rule, calculate the Jacobian matrix of the mapping GoF R3 R², i.e., JGoF(x1, x2, x3). What is JGOF(0, 0, 0)? (iii) [7 Marks] Give reasons why the mapping Go F is differentiable at (0, 0, 0) R³ and determine the derivative matrix D(GF)(0, 0, 0). [3 Marks]arrow_forward5. (i) Let f R2 R be defined by f(x1, x2) = x² - 4x1x2 + 2x3. Find all local minima of f on R². (ii) [10 Marks] Give an example of a function f: R2 R which is not bounded above and has exactly one critical point, which is a minimum. Justify briefly Total marks 15 your answer. [5 Marks]arrow_forward
- Total marks 15 4. : Let f R2 R be defined by f(x1, x2) = 2x²- 8x1x2+4x+2. Find all local minima of f on R². [10 Marks] (ii) Give an example of a function f R2 R which is neither bounded below nor bounded above, and has no critical point. Justify briefly your answer. [5 Marks]arrow_forward4. Let F RNR be a mapping. (i) x ЄRN ? (ii) : What does it mean to say that F is differentiable at a point [1 Mark] In Theorem 5.4 in the Lecture Notes we proved that if F is differentiable at a point x E RN then F is continuous at x. Proof. Let (n) CRN be a sequence such that xn → x ЄERN as n → ∞. We want to show that F(xn) F(x), which means F is continuous at x. Denote hnxn - x, so that ||hn|| 0. Thus we find ||F(xn) − F(x)|| = ||F(x + hn) − F(x)|| * ||DF (x)hn + R(hn) || (**) ||DF(x)hn||+||R(hn)||| → 0, because the linear mapping DF(x) is continuous and for all large nЄ N, (***) ||R(hn) || ||R(hn) || ≤ → 0. ||hn|| (a) Explain in details why ||hn|| → 0. [3 Marks] (b) Explain the steps labelled (*), (**), (***). [6 Marks]arrow_forward4. In Theorem 5.4 in the Lecture Notes we proved that if F: RN → Rm is differentiable at x = RN then F is continuous at x. Proof. Let (xn) CRN be a sequence such that x → x Є RN as n → ∞. We want F(x), which means F is continuous at x. to show that F(xn) Denote hn xnx, so that ||hn||| 0. Thus we find ||F (xn) − F(x) || (*) ||F(x + hn) − F(x)|| = ||DF(x)hn + R(hn)|| (**) ||DF(x)hn|| + ||R(hn) || → 0, because the linear mapping DF(x) is continuous and for all large n = N, |||R(hn) || ≤ (***) ||R(hn)|| ||hn|| → 0. Explain the steps labelled (*), (**), (***) [6 Marks] (ii) Give an example of a function F: RR such that F is contin- Total marks 10 uous at x=0 but F is not differentiable at at x = 0. [4 Marks]arrow_forward
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