f2006Solns1 - ECE 190 - Fall, 2006 Assignment 1 Solutions 3...

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ECE 190 — Fall, 2006 Assignment 1 Solutions 3 only A and D are equal B and C have R for their universe and - 1 B but - 1 / C E ± = D because 0 / E (its universe is Z + , not Z ) 4 (a) S = {- 1 , 1 } (b) T = { 0 , 2 } (c) U = — no integer is both 2 and ≤- 2 (d) V = Z — every integer is either greater than 2 or less than 3 (e) W = — similar to (c) (f) X = Z — similar to (d) 8 (a) yes (b) no, it is an element (c) no, it is a subset (d) yes (e) yes (f) no, it is an element (g) yes (h) no (i) yes (j) yes 9 (a) A B = { 1 , 3 , 5 , 6 , 7 , 9 } (b) A B = { 3 , 9 } (c) A C = { 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 } (d) A C = (e) A - B = { 1 , 5 , 7 } (f) B - A = { 6 } (g) B C = { 2 , 3 , 4 , 6 , 8 , 9 } (h) B C = { 6 } 10 (a) A B = { x R | 0 <x< 4 } (b) A B = { x R | 1 x 2 } (c) A c = { x R | x 0or x> 2 } (d) A C = { x R | 0 <x 2or3 x< 9 } (e) A C = (f) B c = { x
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This homework help was uploaded on 04/19/2008 for the course ECE 190 taught by Professor Carter during the Fall '06 term at University of Toronto- Toronto.

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f2006Solns1 - ECE 190 - Fall, 2006 Assignment 1 Solutions 3...

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