Calculus
6th Edition
ISBN: 9781465208880
Author: SMITH KARL J, STRAUSS MONTY J, TODA MAGDALENA DANIELE
Publisher: Kendall Hunt Publishing
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Chapter 11.7, Problem 23PS
To determine
The absolute extrema of
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Q.1. The set of all positive real numbers with the operations
x + y = xy
kx = xk
Is it a vector space? Justify your answer.
8. Decide which of the following sets are linearly independent in R". Justify your
answer in each case.
(a) X₁ = {(1,0), (0, 1)} ℃ R²
(b) X₂ = {(1,0), (2,0)} ℃ R²
(c) X3 = {(-1,0), (0, 0)} CR²
2
(d) X₁ = {(1,0), (0, 1), (1, 1)} ℃ R²
C
(e) X5 = {(1,0,0), (0, 1, 0), (1, 1, 1)} ℃ R³
(f) X6 = {(1,0,0), (0, 1, 0), (1, 1, 1), (−1, 0, 1)} ℃ R³
(g) X7 = {(0, 0, 0), (0, 1, 0), (1, 1, 1), (−1, 0, 1)} ℃ R³
(h) Xs = {(0, 1, 0), (1, 1, 1)} ℃ R³
8
(i) X9 = {(4,3,0,0), (0, 0, 1, 1), (0, 0, 0, 1), (1, 0, 0, 1), (0, 1, 0, 1)} ℃ R4
(j) X10 = {(1, 2, 0, 0), (0, 2, 3, 0), (0, 0, −1, 1)} ℃ Rª
3. If z = f(x, y) with the relation xy²z³ + x®y²z+1= x + y+ z. Find
at (1, 1, 1).
Chapter 11 Solutions
Calculus
Ch. 11.1 - Prob. 1PSCh. 11.1 - Prob. 2PSCh. 11.1 - Prob. 3PSCh. 11.1 - Prob. 4PSCh. 11.1 - Prob. 5PSCh. 11.1 - Prob. 6PSCh. 11.1 - Prob. 7PSCh. 11.1 - Prob. 8PSCh. 11.1 - Prob. 9PSCh. 11.1 - Prob. 10PS
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- If x and y are elements of an ordered integral domain D, prove the following inequalities. a. x22xy+y20 b. x2+y2xy c. x2+y2xyarrow_forwardIf a functionfis increasing on (a,b) and decreasing on (b,c) , then what can be said about the local extremum offon (a,c) ?arrow_forward8. Decide which of the following sets are linearly independent in R". Justify your answer in each case. (a) X₁ = = {(1,0), (0, 1)} ℃R² (b) X₂ = {(1,0), (2,0)} CR² (c) X3 = {(-1,0), (0,0)} ℃ R² (d) X4 = {(1,0), (0, 1), (1, 1)} C R² (e) X5 = {(1,0,0), (0, 1, 0), (1, 1, 1)} CR³ (f) X6 = {(1,0,0), (0, 1, 0), (1, 1, 1), (−1, 0, 1)} ℃ R³ (g) X7 = {(0,0,0), (0, 1, 0), (1, 1, 1), (–1, 0, 1)} ℃ R³ (h) X8 = {(0, 1,0), (1, 1, 1)} C R³ (i) X9 = {(4, 3, 0, 0), (0, 0, 1, 1), (0, 0, 0, 1), (1, 0, 0, 1), (0, 1, 0, 1)} ℃ R4 (j) X10 = {(1, 2, 0, 0), (0, 2, 3, 0), (0, 0, −1, 1)} ℃ Rª 9. Decide, for the sets X; above, for which i, j = {1, 2, ..., 10}, span(X₂) = span(X;).arrow_forward
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