. Which of the following formulas define norms on R²? (Let (x, y) be the co- ordinates in R².) (a) (x² + xy + y²) ¹/2; (e) (x + y)²; 5. (a) and (d) (b) (d) (x²-3xy + y²) ¹/²; (x+y) + (x² + y²) 1/2

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
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Chapter6: Vector Spaces
Section6.5: The Kernel And Range Of A Linear Transformation
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question about:LINEAR SYSTEMS AND EXPONENTIALS OF OPERATORS--New Norms for Old

6. Which of the following formulas define norms on R²? (Let (x, y) be the co-
ordinates in R².)
6.
(a) (x² + xy + y²) ¹/²;
(c) (x +| y |) ²;
(a) and (d)
(b)
(d)
(x² - 3xy + y²) ¹/2;
(x+| y |) + ²/ (x² + y²) ¹/²
Transcribed Image Text:6. Which of the following formulas define norms on R²? (Let (x, y) be the co- ordinates in R².) 6. (a) (x² + xy + y²) ¹/²; (c) (x +| y |) ²; (a) and (d) (b) (d) (x² - 3xy + y²) ¹/2; (x+| y |) + ²/ (x² + y²) ¹/²
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