course Mth 151
6/14 12
005. `Query 5
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Question: `qQuery 2.5.12 n({9, 12, 15, ..., 36})
YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
Your solution:
The numbers are increasing by 3 so if you do add 3 to 15 then 3 to the next number etc. then you get a total of 10 numbers in the set
3
Ok
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Question: `qQuery 2.5.18 n({x | x is an even integer }
Your solution:
So any integer that is even will be in the set so you can say it has an infinite possibilities so the answer is aleph-null or aleph0
3
Ok
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Question: `qQuery 2.5.24 how many diff corresp between {Foxx, Myers, Madonna} and {Powers, Charles, Peron}?
Your solution
[{fox, powers}, {myers, Charles}, {Madonna, peron}]
[{Foxx, Powers},{Myers,Peron},{Madonna, Charles}]
[{Foxx, Charles},{Myers, Powers},{Madonna, Peron}]
[{Foxx, Charles},{Myers,Peron},{Madonna,Powers}],
[{Foxx, Peron},{Myers, Powers},{Madonna,Charles}]
[{Foxx, Peron},{Myers, Charles},{Madonna, Powers}]
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Question: `q2.5.36 1-1 corresp between counting #'s and {-17, -22, -27, ...}
Your solution:
Counting numbers are {1,2,3,4,5,6,…} then you have {-17,-22,-27…} so your 1-1 would be {1 -17, 2 -22, 3-27, n -5n-12} the reason you get n -5n-12 is because n=1 so you do 1*-5= -5 but this is 12 away from 17 so that is where you get -5-12=-17.
2
Ok
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Question: `q2.5.42 show two vert lines, diff lengths have same # of points
Your solution:
You can only have one point from the longer line matched up with one point of the shorter line therefore they would have to have the same number of points to get a 1-1 correspondence
1
Should do a construction to help understand the problem better.
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