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course Mth 151
6/27 12
Question: `q4.5.9 {-1,0,1} group on multiplication?
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Your solution:
There is an element without an inverse this is not a group
2
Ok
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Question: `q4.5.25 verify (NT)R = N(TR)
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Your solution:
Identity
2
Ok
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Question: `qquery 4.5.33 inverse of T
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Your solution:
T is its on inverse
2
Ok
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Question: `q4.5.42. Explain what property is gained when the system of integers is extended to the system of rational numbers.
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Your solution:
Additive inverse and it is undefined on the real numbers
2
ok
"
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