6. The sets A and B are defined as: A = {2, 5, 7} B = {*, +} (a) Express the set A x B in roster notation. (b) Give an example of an element in A × B × B × B. (c) Give an example of an element in B3. (d) What is A × Ø.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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6. The sets A and B are defined as:
A = {2,5, 7}
B = {*,+}
(a) Express the set A x B in roster notation.
(b) Give an example of an element in A × B × B × B.
(c) Give an example of an element in B³.
(d) What is A × (Ø.
Transcribed Image Text:6. The sets A and B are defined as: A = {2,5, 7} B = {*,+} (a) Express the set A x B in roster notation. (b) Give an example of an element in A × B × B × B. (c) Give an example of an element in B³. (d) What is A × (Ø.
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